An Update on Restorative Dental Care for Children · Dental caries management includes...
Transcript of An Update on Restorative Dental Care for Children · Dental caries management includes...
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An Update on Restorative Dental Care for Children
Kevin J. Donly, DDS, MS Professor and Chair
Department of Developmental Dentistry University of Texas Health Science Center
at San Antonio
CSPD & WSPD Meeting
Dana Point, CA March 27, 2015
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DISCLOSURE
I have received grants or research support from the National Institute of Dental and Craniofacial Research, Health Resources and Services Administration, 3M ESPE, Premier, Bisco, GC, Dentsply, Ivoclar, Kerr, NuSmile, Procter and Gamble, Church and Dwight, Philips, Optiva, Oral-B, Enamelon, Atrix Laboratories and Guidor companies. Although I have received grants or research support from these entities, I have no personal financial interests.
Kevin J. Donly, DDS, MS Professor and Chair Dental School University of Texas Health Science Center at San Antonio
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Epidemiology, Risk Assessment and Clinical Decision Making
• 1. Prevention of caries requires early and ongoing risk assessment and intervention.
• 2. Risk indicators contributing to caries include past and present caries activity, socioeconomic status, sealant status, biofilm status (dental plaque), fluoride exposure and salivary factors and biomarkers.
• 3. Ongoing surveillance is a crucial component of caries management in order to monitor the progression or arrest of caries lesions.
• 4. Dental caries management includes individualized prevention, therapeutic interventions, ongoing surveillance and necessary restorative therapy.
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Prevention
• Daily oral hygiene maintenance • Saliva stimulation and antimicrobials (i.e.
xylitol, chlorhexidine) as necessary • Professional evaluation as necessary • Professionally applied topical fluoride • CPP-ACP ( casein phosphopeptide –
amorphous calcium phosphate) • Sealants
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Fluoride Dentifrice Initiation
• When do we begin brushing children’s teeth with a fluoridated dentifrice?
- Risk Assessment - Fluorosis data since “pea size”
recommendation?
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Xylitol
• 5 carbon sugar alcohol sweetner • 40% fewer calories than sucrose • Reduces acid production of plaque, plaque
adherence and number of MS • High doses can cause diarrhea • MS dose response to xylitol gum (best
effect at 6.88 g/d) through RCT (Milgrom et al. 2006)
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• No data supports caries inhibitory effects of OTC xylitol gums available in the U.S.
• Recommend chewing 20-30 minutes three times per day.
• Use with mothers of infants (Soldering, 2000)
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The Effectiveness of Xylitol in a School-Based Cluster-Randomized Clinical Trial; Caries Res 49:41-9, 2015
• 562children (age 5-6) from 5 elementary schools in Cleveland • Randomized by classroom to receive xylitol (7.8g/day) or placebo for 9 mo. • Received oral hygiene instructions, toothbrush prophylaxis with fluoridated
dentifrice and 5% fluoride varnish application every 6 mo. • Received sealants on permanent first molars • Final evaluation was at 30 mo. (dmfs)
• Conclusion: Xylitol consumption did not have additional benefit beyond other
preventive measures.
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Nonfluoride Caries-Preventive Agents: Evidence-Based Clinical Recommendation (JADA, 142:1065-1071, 2011)
• In children aged 5 to 16 years, supervised consumption of chewing gum sweetened with sucrose-free polyol (xylitol only or polyol combinations) for 10 to 20 minutes after meals marginally reduces the incidence of caries (moderate level of certainty)
• In children reporting caries experience, consumption of xylitol-containing lozenges or hard candy reduces the incidence of caries (low level of certainty)
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Chlorhexidine and Other Antibiotics
• Antibacterial activity with gram positive and negative bacteria
• Positive charge; attaches to pellicle, hydroxyapatite, mucous membranes and bacterial surface
• Disrupts bacterial membranes and enzyme systems
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• Recommended to use 1-2 tsp/d for one week every three months prn or more often if necessary (Featherstone 2006)
• Disadvantages are alcohol content, bad taste and concern of ingestion in young children (Butler has alcohol-free)
• Can be applied with cotton-tipped applicator or toothette for young children
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Nonfluoride Caries-Preventive Agents: Evidence-Based Clinical Recommendations (JADA, 142:1065-1071, 2011)
• In children aged 4 to 18 years, professionally applied 10 to 40% chlorhexidine varnish does not reduce the incidence of caries (moderate level of certainty)
• In children up to 15 years, application of a 1:1 mixture of chlorhexidine-thymol varnish does not reduce the incidence of caries (low level of certainty)
• In children and adults, the use of 0.05 to 0.12% chlorhexidine rinse
does not reduce the incidence of coronal caries ((high level of certainty)
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Professionally Applied Topical Fluoride
• 1.23% APF • 8% stannous fluoride • 2% sodium fluoride • 5% sodium fluoride varnish (most
appropriate for prevention of ECC due to age and cooperation level of patient)
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2% NaF, 8% SnF2 and 1.23% APF are all effective in caries inhibition (approximately 1/3 reduction).
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Silver Diamine Fluoride (SDF)
• FDA reclassified (2014) SDF as an acceptable topical fluoride to be marketed and professionally applied in the USA.
• SDF, similar to action of silver nitrate, inhibits caries progression.
• We have known this for years but discoloration has been the primary reason for not gaining popularity.
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Vanish XT Extended Contact Varnish (3M ESPE/OMNI)
• Desensitization of exposed root surfaces • Protective coating for caries risk areas • Short-term sealant for erupting molars
where a high degree of moisture tolerance is needed
• Releases fluoride, calcium, phosphate • Tooth- colored
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Week 6 Dry
Week 6 Wet
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CPP-ACP • CPP-ACP (casein phosphopeptide-amorphous
calcium phosphate): calcium and phosphate ions are stabilized into nanoclusters by CPP
• Marketed in the U.S. as MI Paste and MI Paste Plus (900 ppm F) by GC America
• Demonstrated demineralization inhibition and enhancement of remineralization in vitro and in situ
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• CPP-ACP clinical trials: - increase in calcium and phosphate levels in supragingival plaque (mouth rinse) -gum inhibits proximal caries progression and enhances remineralization compared to placebo (radiographic assessment) -CCP-ACP more effective at remineralizing post-orthodontic white spot lesions than fluoride mouth rinse in RCT
• Most studies out of Australia using gum • Quality of existing studies indicate fair level of
evidence; well-controlled RCT are necessary
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Effect of CPP-ACP Paste on Dental Caries in Primary Teeth: A Randomized Trial, J Dent Res 91:847-852, 2012.
One year double blind, placebo controlled
(n=146) RCT of high-risk 2.5 to 3.5 year old children (n=150 received daily 10% CPP-ACP) from Thailand.
No significant difference (ICDAS).
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Remineralizing Efficacy of a CPP-ACP Cream on Enamel Caries Lesions in situ. Caries Res; 49:56-62, 2015
• Double-blind, randomized, cross-over in situ study • 13 participants • Three 4 week experimental legs with patients wearing intra-oral
mandibular appliances with 8 pre-demineralized enamel specimens • Legs: (1) application of CPP-ACP cream (GC) after the use of
fluoride dentifrice twice daily, (2) fluoridated dentifrice twice daily, (3) non-fluoridated dentifrice twice daily.
• Conclusion: The fluoridated dentifrice induced significantly higher mineral gain compared to the non-fluoridated dentifrice and the CPP-ACP cream applied after brushing with a fluoridated dentifrice.
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Early Caries Diagnosis
• Visual Examination (white spot lesion) • DiagnoDent • QLF (Quantitative Light Fluorescence)
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Visual Exam- Is Caries Present?
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Results
- Early Lesions (less than 100 microns) • QLF demonstrates best success with
more than 4 times the reliability to laser fluorescence and visual examination.
- Late Lesions (approaching dentin) • All examination techniques perform well.
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EARLY CARIES DETECTION How Will Dentistry Change?
-Lesions detected 1-2 years earlier than present visual technique (<50 microns depth)
-Early intervention techniques to remineralize or arrest lesion
-Monitor lesions over time -Early diagnosis associates to “Risk Assessment”
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Glass Ionomer Sealant
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RESIN-BASED SEALANTS The dental literature supports: 1. Bonded resin sealants, placed by appropriately trained dental
personnel, are safe, effective, and underused in preventing pit and fissure caries on at-risk surfaces. Effectiveness is increased with good technique, appropriate follow-up and resealing as necessary.
2. Sealants are effective in high caries-risk children but information on the magnitude of the benefit of sealing in other conditions is scarce. The relative effectiveness of different types of sealants has yet to be established.
3. Sealant benefit is increased by placement on surfaces judged
to be at high risk or surfaces that already exhibit incipient carious lesions. Placing sealant over minimal enamel caries has been shown to be effective at inhibiting lesion progression. Appropriate follow-up care, as with all dental treatment, is recommended.
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4. Presently, the best evaluation of risk is done by an experienced clinician using indicators of tooth morphology, clinical diagnostics, caries history, fluoride history, dental care history and present oral hygiene.
5. Sealant placement methods should include careful cleaning of the pits and fissures without removal of any appreciable enamel. Some circumstances may indicate use of a minimal enamoplasty technique.
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TABLE 10-3. CLINICAL STUDIES OF Bis-GMA SEALANTS
Study
Time
Sealant Retained*
Caries Reduction
Mos % % Royhourse40 36 29 Buonocore9 24 87 99 Rock38 24 80 99 Horowitz et al.22 24 73 67 Courley19 24 78 57 Merrill et al.33 15 55 Going et al.18 24 69 55 Meurman and Heiminen 36 80 88 * Completely present, data for permanent teeth
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15-Year Single Sealant Application Recall
(Simonsen, JADA 122:34-42, 1991)
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Retention of White Sealant by Surface on Permanent First Molars
5 Years 10 Years 15 Years
Complete Retention 82% (173) 56.7% (131) 27.6% (53)
Partial Retention 10.9% (23) 20.8% (48) 35.4% (68)
Missing 0.5% (1) 6.9% (16) 10.9% (21)
Restored/carious 6.6% (14) 15.6% (36) 26% (50)
Total 100% (211) 100% (231) 100% (192)
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Sound vs. Carious or Restored Surfaces
on Permanent First Molars at 15 Years
Group with Sealant
Group without Sealant
Sound surfaces 68.8% (88) 17.2% (22)
Carious or restored surfaces
31.3% (40) 82.8% (106)
Total surfaces 100% (128) 100% (128)
Matched pair analysis (n = 128 surfaces, 16 subject pairs)
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SEALANTS
1. Filled versus Unfilled 2. Detrimental Effects (Bisphenol A)? 3. Fluoridated Sealants 4. Primers Prior to Sealant Placement
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(1) 50% uncured bisphenol A leaches within 3 hours (Ferracane, 1990). (2) Saliva dose not equal to blood dose. (3) Estrogenic effects in breast cancer cells, not normal cell culture.
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Bisphenol A 90-931 µg/30 ml saliva
Environmental Health Perspectives March, 1996
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6. A low-viscosity, hydrophilic material bonding layer as part of or under the actual sealant has been shown to enhance the long-term retention and effectiveness.
7. Glass ionomer materials can be used as transitional sealants, and may prove to be effective as longer-term pit and fissure sealants.
8. The profession must be alert to new, effective methods for preventing pit and fissure caries, including changes in dental materials or technology, and improvements in caries risk assessment.
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FLUORIDE RELEASING SEALANTS
Glass Ionomer Fluoridated Resin
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Lesion Initiation (Mean ± S.D.)
Control Sealant 138 ± 18µm Fluoride Sealant 109 ± 21µm GIC 83 ± 12µm
(Hicks & Flaitz, Am J Dent, 1992)
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PRIME & BOND 2.1 (Caulk/Dentsply)
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Self-etching Sealants and Hydrophilic Sealants
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ICON (DMG)
• Penetrating (enamel subsurface) resin • Etch with hydrochloric acid first to make
surface more easy to penetrate • Smooth surfaces (facial and proximal) • Not radiopaque
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• Treatment Of Proximal Superficial Caries Lesions on Primary Molar Teeth with Resin Infiltration and Fluoride Varnish Only: Efficacy after 1 Year. Ekstrand KR, Bakhshandeh A, Martignon S. Caries Research 2010; 44:41-46.
• 42 children (mean age 7.17 yrs.) – Split mouth design
• After 1 yr., using ICDAS Scores: 31% of resin infiltrate lesions progressed 67% of fluoride varnish lesions progressed Radiographically, 23% of infiltrate and 62% of
varnish lesions progressed
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Randomized Controlled Clinical Trial on Proximal Caries Infiltration: Three-Year Follow-Up; Caries Research 2012; 46:
544-548.
- 22 Adults with proximal lesions (radiographically in the inner half of enamel to outer third of dentin) with a total of 29 lesion
pairs in a split mouth research design.
- ICON or nothing (control) on each pair of lesions.
- After 3 years, radiographically, 4% of the infiltrated ICON lesions progressed and 42% of the control lesions progressed
being significantly different (p< 0.002).
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Infiltrating/Sealing Proximal Caries Lesions: A 3-year Randomized Clinical Trial; J Dent Res 2012;
9:288-292.
- 39 Adults with 3 proximal lesions (outer third of dentin progression).
- One received ICON, one received sealant and one
was a control.
- At three years, radiographically there was no significant difference (p<0.05) between ICON and
sealant, however, both ICON and sealant were significantly better than the placebo.
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Implementing Restorative Treatment
• Treatment plan according to risk assessment • Obtain consultations • Provide treatment options to patients and parents,
including restorative materials and location (i.e. outpatient dental clinic; operating room)
• Utilize restorative materials within their limitations (resin-based composite, amalgam, glass ionomer cement, stainless steel crown)
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GLASS IONOMER CEMENTS
Types of Restorations • Preventive Glass Ionomer Restorations • Class I • Class II • Class III • Class V • Intermediate Restorations
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COMPOMER Types of Restorations • Preventive Resin Restorations • Class I • Class II • Class III • Class IV • Class V
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GLASS IONOMER CEMENT
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Developed in England by McLean and Wilson in 1972. They were looking for a dual purpose material that would function as both a cementing agent and direct esthetic restoration.
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Glass Ionomer Cement is basically a hybrid of silicate and polycarboxylate cements:
1. The liquid is an aqueous solution of polyacrylic acid, similar to the liquids utilized in polycarboxylate cements. 2. The powder is mainly aluminosilicate, which is similar to the powder in silicate cements.
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Tartaric Acid (Accelerator) HOOC (CHOH)2 COOH
• The original glass ionomer cement (ASPA) had the disadvantage of a slow rate of surface hardening.
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Benefits
Physical properties similar to dentin Fluoride release – Caries inhibition Bonding to tooth structure Solubility less than silicate cements
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ADVANTAGES
Time efficient Minimal preparation No need to acid-etch Behavior
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GLASS IONOMER MATERIALS The dental literature supports the use of glass ionomer cement or resin modified glass ionomer cement systems in the following situations: 1. Luting cement: a. stainless steel crowns, b. orthodontic bands, c. orthodontic brackets (limited). 2. Surface protectant/sealant. 3. Cavity base/liner 4. Class I restorations in primary teeth. 5. Class II restorations in primary teeth. 6. Class III restorations in primary teeth.
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7. Class III restorations in permanent teeth in high-risk patients or teeth that cannot be isolated. 8. Class V restorations in primary teeth. 9. Class V restorations in permanent teeth in high-risk patients or teeth that cannot be isolated. 10. Caries control: a. high-risk patients, b. restoration repair, c. Interim Therapeutic Restorations (atraumatic restorative treatment)
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Stainless Steel Crown Cementation
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FACIAL CUT-OUT
STAINLESS STEEL CROWN
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GLASS IONOMER CEMENT
BASES/LINERS
Glass Ionomer Cement used in Conjunction with Composite Resin
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Glass Ionomer Base/Liner
Following Caries Removal
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CLASS I RESTORATION
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Advantages Minimal Tooth Preparation Fluoride Release
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Concerns
Bond strength Compressive strength Wear
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CLASS II RESTORATION
Light Cured Glass Ionomer Restoratives Traditional Fuji II (GC) Vitremer (3M) Photac Fil (ESPE)
Current riva light cure (SDI)
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CHEMICAL CURED GLASS IONOMER
CEMENTS
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Ketac® Molar ESPE
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Ionofil Plus (VOCO)
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Fuji IX (GC)
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CLASS III RESTORATION
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CLASS V RESTORATIONS
INTERIM THERAPEUTIC
RESTORATIONS
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ADVANTAGES
♦ Time efficient ♦ Minimal preparation ♦ No need to acid-etch ♦ Behavior
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Restorations Evaluated Type of Restoration
Number of Restoration Evaluated
Age of Patient When Restoration Placed (Mean + S.D.)
Age Restoration (Mean + S.D.)
Class I 393 4 yrs. 8mo. + 1yr. 4mo. 4 yrs. 3mo. + 1yr. 1mo.
Class II 406 5 yrs. 10mo. + 1yr. 3mo.
4 yrs. 1mo. + 1yr.
Class III 15 5 yrs. 7mo. + 1yr. 3mo.
4 yrs. 5mo. + 1yr. 1mo.
Class V 50 4 yrs. 10mo. + 1yr. 3mo.
4 yrs. 2mo. + 1yr. 2mo.
Total 864 5 yrs. 2mo. + 1yr. 5mo.
4 yrs. 2mo. + 1yr. 1mo.
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Clinical Evaluation Data
Characteristics
Type of Restoration
Rating*
Wear
Class I Class II Class III Class V
A-353 (89.8%), B-11 (2.8%), C-29 (7.4%) A-349 (86.0%), B-30 (7.4%), C-27 (6.6%) A-15 (100%) A-50 (100%)
Marginal Integrity Class I Class II Class III Class V
A-353 (89.8%), B-11 (2.8%), C-29 (7.4%) A-349 (86.0%), B-30 (7.4%), C-27 (6.6%) A-15 (100%) A-49 (98.0%), B-0 (0%), C-1 (2.0%)
Axial Contour Class I Class II Class III Class V
NA A-349 (86.0%), B-30 (7.4%), C-27 (6.6%) A-15 (100%) NA
Secondary Caries Class I Class II Class III Class V
A-393 (100%) A-405 (99.8%), C-1 (0.2%) A-15 (100%) A-50 (100%)
* Ratings were as follows: Alfa, or A, clinically ideal; Bravo, or B, clinically acceptable; Charlie, or C, clinically unacceptable.36
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CARIOLOGY
Demineralization Inhibition and Remineralizing Effects
of Fluoride Releasing Materials
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COMPOMER Dyract®
(L.D. Caulk/Dentsply) Compoglass®
(Vivadent/Ivoclar) Hytac® (ESPE)
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Dyract®
Dentsply
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Compoglass®
Vivadent
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Hytac®
ESPE
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COMPOMER Composition: Aluminum fluorosilicate glass Dicarboxylic acid with curable double bonds. Photoinitiator Monomers with free double bonds Curing reaction: Radical polymerization (composite reaction) Acid-base reaction (glass ionomer reaction)
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Compoglass Composition (1.0g)
Propoxylated Bis-GMA 0.03g 0.2g 20% Urethane dimethacrylate 0.07g Tetraethyleneglycol dimethacrylate 0.04g 0.06g = 30% Cycloaliphatic dicarboxylic acid dimethacrylate 0.06g of 0.2g Silanized spheroidal mixed oxides 0.06g Ytterbium trifluoride 0.10g 0.8g 80% Silanized Ba-fluorosilicate glass 0.63g Initiators, stabilizers, pigments 0.01g
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Compoglass SCA
Methacrylate-modified polyacrylic acid 0.06g HEMA 0.44g Water 0.45g Maleic acid 0.03g Initiators, catalysts, stabilizers 0.02g
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Compomers
Why? Why Not?
Etch VS.
No Etch
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Dyract AP (Caulk/Dentsply)
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Compoglass F (Vivadent/Ivoclar)
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F 2000 (3M)
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Dyract (Dentsply)
THREE-YEAR RESULTS
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TOOTH-BONDING ADHESIVES
The dental literature supports: 1. The use of tooth-bonding adhesives, when
used according to the manufacturer’s instructions sometimes unique for each product, as being effective in primary and permanent teeth in enhancing enamel-dentin tooth structure preservation, minimizing microleakage and reducing sensitivity.
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Contemporary Dentin Bonding
1. Hydroxyethyl Methacrylate (HEMA) 2. 4-Methacryloxyethyl Trimellitic
Anhydride (4-META)
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Conditioning and/or Primer Components to Alter or Remove Smear
Layer for Mechanical and Chemical Retention
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CONDITIONER (Etchant)
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10% Phosphoric Acid (15 sec.)
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PRIMER ( Methacrylate)
• Dehydrating Agents
• Aldehyde
• Acetone • Alcohol
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Scotchbond® Multi-Purpose
(3M)
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Scotchbond Multipurpose
Adhesive (Dry Technique)
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Scotchbond Multipurpose
Adhesive (Wet Technique)
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Contemporary Light Cured Primers
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ONE-STEP® (Bisco)
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Self-Etching Primers
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Advantages No concerns on how wet or dry Low postoperative sensitivity
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Disadvantages
Low bond strength to sclerotic dentin Low bond strength to sound enamel Long-term weakens over time Minimal etch depth Poor bond to self or dual cure composite
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Self-Etch Adhesives
• Adhesive permeability affects composite coupling to dentin treated with a self-etch adhesive. Oper Dent 2003; 28: 610-21.
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RESIN-BASED COMPOSITE
For all resin-based composite restorations, teeth must be adequately isolated to prevent saliva contamination. The dental literature supports the use of highly filled resin- based composite in the following situations: 1. Small pit and fissure caries where conservative
preventive resin restorations are indicated in both the primary and permanent dentition;
2. Occlusal surface caries extending into dentin; 3. Class II restorations in primary teeth that do not extend
beyond the proximal line angles.
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4. Class II restorations in permanent teeth that extend approximately one-third to one-half the buccolingual intercuspal width of the tooth;
5. Class V restorations in primary and permanent teeth; 6. Class III restorations in primary and permanent teeth; 7. Class IV restorations in primary and permanent teeth; 8. Strip crowns in the primary and permanent dentitions.
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“PREVENTIVE RESIN RESTORATION”
R.J. Simonsen, 1977
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“PROPHYLACTIC ODONTOTOMY”
T.P. Hyatt, 1923
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Clinical Studies (3 Years)
Restorations
Placed
Caries Houpt, et al. (1985) 273 Delton 10 (4%) Simonsen (1980) 232 Concise 0
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CLASS II
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PREPARATION DESIGN
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FILTEKTM Z 250 (3M)
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POSTERIOR COMPOSITE RESIN POLYMERIZATION
SHRINKAGE
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Polymerization Shrinkage
• Incremental filling reduces stress • Bond strengths of > 18 MPa (MPa =150 psi)
needed to overcome polymerization shrinkage stress
• Less material, less shrinkage, therefore a base (GIC/RMGIC) reduces shrinkage stress
• Resins vary in polymerization shrinkage (2.5%-6%), lower filled resins shrinking more
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Polymerization Shrinkage Reduction
Traditional
-Placement of bases/liners to limit amount of resin composite
-Incremental placement of resin composite -Initial low intensity light then high intensity light for slower polymerization allowing plastic deformation
(flow) to compensate for shrinkage.
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Contemporary
-High level of fillers (nanofillers) lowering the resin matrix fraction
-Replacement traditional monomers with larger molecular weight monomers to have fewer double
bonds, leading to less shrinkage - Addition of silorane monomer where molecular
rings are cleaved open to gain space which counteracts volume shrinkage.
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BULK FILL RESIN-BASED COMPOSITES
-Frequently nanofilled -Low shrinkage resin
-Polymerization depth up to 5 mm
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FLOWABLE COMPOSITES
Product – Company
Filler Content
%
Fluoride
Compressive Strength (MPa)
Aeliteflo-Bisco 60 No 288 Versaflo-Centrix 63 Yes 220 Crystal Confi-Dental – Essence Products 64 Yes 225 Star Flow – Danville, Engineering 61 Yes 380 Flo Restore – Den-Mat ? Yes ? True-Look –Denpac Fivestars 70.5 Yes 254
Durafil Flow – Kulzer 46 No 400 Tetric-Flow – Ivoclar 68 Yes 230 Flow-It – Jeneric/Pentron 75.5 Yes 250 Revolution – Kerr 55 No 290
From Dentistry Today, April 1997.
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CONDENSABLE RESIN
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CONDENSABLE? PACKABLE?
SCULPTABLE?
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Solitaire Kulzer
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Solitaire Wear – 6 Months
Premolars 187µm Molars 292µm
J Dent Res 77(A)237 (Abst. #1051)
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CLASS III and CLASS IV
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4-YEARS
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STRIP CROWNS
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Composite Restorative
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Physical Properties similar to Natural Tooth Structure
Equilibrium of diffusion and absorbance of Calcium, Phosphate and Fluoride
Provides great strength, fracture resistance and moisture tolerability
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AMALGAM Despite existing controversy, the dental literature supports the safety and efficacy of dental amalgam in all segments of the population. The dental literature supports the use of dental amalgam in the following situations: 1. Class I restorations in primary and permanent teeth; 2. Two-surface Class II restorations in primary molars
where the preparation does not extend beyond the proximal line angles;
3. Class II restorations in permanent molars and premolars; 4. Class V restorations in primary and permanent posterior
teeth.
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CLASS II RESTORATION
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STAINLESS STEEL CROWNS The findings from this systematic review support the use of stainless steel crowns in the following situations: 1. Primary molars that have caries lesions, in children at
high risk, may be treated with stainless steel crowns. 2. Children with extensive decay, large lesions or multiple
surface lesions in primary molars should be treated with stainless steel crowns.
3. Strong consideration should be given to the use of stainless steel crowns in children who require general anesthesia for restorative dental care.
4. There is evidence from case reports and one randomized controlled trial supporting the use of preformed metal crowns in permanent teeth as a semi-permanent restoration for the treatment of severe enamel defects or teeth with gross caries.
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INDICATIONS ♦ Multiple surfaces decayed ♦ Pulpal involvement ♦ Preparation extends beyond line
angles ♦ Risk Assessment (high)
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HYPOPLASTIC ENAMEL
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RESIN FACED STAINLESS STEEL CROWN
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ZIRCONIA CROWNS
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ANTERIOR ZIRCONIA CROWNS
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HALL TECHNIQUE
• The success of stainless steel crowns placed with the Hall Technique. A retrospective study. J Am Dent Assoc 2014; 145:1248-53
65 (97%) of 67 SSCs placed with the Hall Technique (mean observation time 15 mos.) and 110 (94%) 0f 117 SSCs placed conventionally (mean observation time 53 mos.) were successful, with no significant difference in success (p<0.05).
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DECIDING FACTORS 1. ISOLATION 2. RISK ASSESSMENT 3. PREPARATION EXTENT 4. LONGEVITY
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Prepare Tooth (Primary) Class IV
Strip Crown*
SSC
Isolate Not Isolate
Class III
Resin Composite*
GIC
Isolate Not Isolate
Class V
Resin Composite*
GIC
Isolate Not Isolate
*Glass Ionomer base over exposed dentin
†
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Prepare Tooth (Primary)
Resin Composite*
GIC or
Amalgam
SSC
Isolate Not Isolate
Isolate Not Isolate
SSC Pulpotomy
*Glass Ionomer base over exposed dentin
Resin Composite*
GIC or
Amalgam
Class I
Class II (not beyond line angle)
Class II (beyond
line angle) Pulp
Exposure
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Prepare Tooth (Permanent)
Class IV
Resin Composite*
or Crown
Isolate Not Isolate
Class III
Resin Composite*
GIC
Isolate Not Isolate
Class V
Resin Composite*
GIC
Isolate Not Isolate
*Glass Ionomer base over exposed dentin or dentin bonding system
Resin Composite*
or Crown
Reposition
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Prepare Tooth (Permanent) Class II
(not beyond line angle)
Resin Composite*
Amalgam
Isolate Not Isolate
Class I
Resin Composite*
Amalgam
Isolate Not Isolate
Class II (beyond line angle)
Amalgam or
Inlay/Onlay or
Crown
*Glass Ionomer base over exposed dentin or dentin bonding system
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THANK YOU!