Dental Implant - Copy
Transcript of Dental Implant - Copy
-
8/3/2019 Dental Implant - Copy
1/37
IMPLANT IMAGING
FEBINSHALU N V
FINAL YEAR PART-1
-
8/3/2019 Dental Implant - Copy
2/37
Dental implants are metal posts that
are surgically implanted in the jaw tosupport a fixed dental prosthesis
-
8/3/2019 Dental Implant - Copy
3/37
1. Root form2. Blade form
3. Subperiosteal
-
8/3/2019 Dental Implant - Copy
4/37
Diagnostic imaging and techniques help todevelop and implement a cohesive andcomprehensive treatment plan for the implantteam and the patient
-
8/3/2019 Dental Implant - Copy
5/37
1. Preprosthetic implant imaging2. Surgical and interventional implant imaging
3. post prosthetic implant imaging
-
8/3/2019 Dental Implant - Copy
6/37
1. To determine the quantity,quality andangulation of bone
2. To determine the relationship of criticalstructures to the prospective implant site
3. To determine the presence or absence ofdisease at the proposed implant site
-
8/3/2019 Dental Implant - Copy
7/37
1. To evaluate the surgical site during andimmediately after surgery
2. Assist in the optimal position and orientationof dental implants
3. Evaluate healing and orientation of dentalimplants
4. Ensure that abutment position and
prosthesis fabrication are correct
-
8/3/2019 Dental Implant - Copy
8/37
1. Evaluate the long-term maintenance ofimplant rigid fixation and function,includingcrestal bone leval around each implant
2. Evaluate the implant complex
-
8/3/2019 Dental Implant - Copy
9/37
Stage of tretment Time(months) Radiograph
Treatmentplanning
-1 PA,pan,tomo,CT,ceph
surgery 0 PA,pan,tomo,CT,ceph
healing 0-3 PA,pan,tomo,CT,ceph
remodeling 4-12 PA,pan,
maintenance 13+ PA,pan,
complication Any time PA,pan,CT
-
8/3/2019 Dental Implant - Copy
10/37
1. Periapical radiographyAdvantages
a) High resolution images
b) High yield modality for ruling out local boneor dental disease
c) Valuable in identifying critical structures
-
8/3/2019 Dental Implant - Copy
11/37
Disadvantagesa. It provides only lateral view of jaw and no
cross sectional information
b. It may suffer from distortion andmagnification
c. It become impossible to make precisemeasurements of vertical height of the
alveolar process
-
8/3/2019 Dental Implant - Copy
12/37
d. Burnout effects are common,making crestalbone loss evaluation difficult
e. It is of little value in determinig bone densityor mineralization
f. It is of little value in depicting the spatialrelationship between the vital structures andthe proposed implant site
-
8/3/2019 Dental Implant - Copy
13/37
Advantages1. Reduce patient exposure to radiation
2. Incresed patient comfort
3. Instant results4. Elimination of inconvenience associatedwith
developing
5. Cost saving
-
8/3/2019 Dental Implant - Copy
14/37
6.Images can be manipulated for thedesired contrast ,colorenhancement,inversion,rotation of the
image7.Distance measurement in 0.1mm
increment is possible
8.Pseudo three dimensional view
9.Images can be stored with in anelectronic device.
-
8/3/2019 Dental Implant - Copy
15/37
Advantages1. Provides generalized information about bone
density
2. Standard occlusal film provides width of theinferior border of mandible.
3. Laterally exposed film shows the width ofthe bone in the midline
-
8/3/2019 Dental Implant - Copy
16/37
Disadvantages1. Two dimensional
2. Oblique and distorted images of themandibular alveolus
3. Mandibular occlusal radiograph showswidest width of bone versus the width atcrest
-
8/3/2019 Dental Implant - Copy
17/37
4.The spatial relationship between the criticalstructures and proposed implant site is lostwith this projection
5.The degree of mineralization of trabecularbone is not determined from this projection
-
8/3/2019 Dental Implant - Copy
18/37
Advantages1. The lateral cephalometric radiograph is
useful because it demonstrates the geometryof the alveolus in the anterior region.
2. The width of bone in the symphyseal regionand the relationship between the buccalcortex and the roots of anterior teeth may be
demonstrated.
-
8/3/2019 Dental Implant - Copy
19/37
3.Together with regional periapical radiographquantitative spatial information is available.
4.Lateral cephalogram also can help to evaluatea loss of vertical dimension,skeletal archinter-relationship,anterior crown/implantratio.
5.Used to evaluate profile alteration after
prosthodontic rehabilitation
-
8/3/2019 Dental Implant - Copy
20/37
Disadvantages1. Not useful for demonstrating bone quality
2. Only demonstrates the cross sectional imageof the alveolus.
-
8/3/2019 Dental Implant - Copy
21/37
Advantages1. Gross anatomy of the jaw and other related
pathologic findings could be evaluated.
2. Opposing landmarks are easily identified
3. The vertical height of the bone initially canbe assessed.
4. Easy procedure and speed.
-
8/3/2019 Dental Implant - Copy
22/37
Disadvantages1. Magnification depending upon the anatomic
location,position of the patient the focus-object distance and the relative location ofthe rotation center of the x-ray system.
2. Uniform magnification of the structuresproduces images with distortion.
-
8/3/2019 Dental Implant - Copy
23/37
3.Little use in depicting the spatial relationshipbetween anatomic structures and implantsite.
4.Maxillary anterior region is difficult toevaluate.
5.Does not demonstrated bone qualitymineralization
6.Resolution and sharpness is less.
-
8/3/2019 Dental Implant - Copy
24/37
Advantages1. It was superior to panoromic radiography for
bone height determination and for locationof the mandibular canal
2. Use of tomography increases the efficacy ofperiapical/panoramic images to predict theappropriate implant size.
3. Less cost than CT4. Less radiation exposure
-
8/3/2019 Dental Implant - Copy
25/37
Disadvantages1. Not useful in determining bone quality or
identifying dental or bone diseases.
2. Image blurring and magnification error caneffect the accuracy of measurements.
3. Accurate localization of critical structures issometime not possible.
4. Anatomic variation may result in imagesthat are difficult to interpret.
-
8/3/2019 Dental Implant - Copy
26/37
Advantages1. It produce very high resolution images.
2. With software programes,shows threedimensional images .
3. The use of CT splint with barium sulfate andmethyl methacrylate in the tooth portion,permits the implant team to evaluate
proposed tooth position ,abutment selectionand implant placement.
-
8/3/2019 Dental Implant - Copy
27/37
4.Position of critical structures can beaccurately assessed.
5.It is helpful in patient education andmotivation
-
8/3/2019 Dental Implant - Copy
28/37
Disadvantages1. High radiation factor
2. Resolution is less than spiral tomograms
3.
Expensive and time consuming procedure
-
8/3/2019 Dental Implant - Copy
29/37
Advantages1. Ionization radiation is not used
2. No adverse effect have been demonstrated
3.
High resolution images4. Images can be reconstructed in all planes
without reformatting
-
8/3/2019 Dental Implant - Copy
30/37
5.Excellent differentiation is possible betweendifferent soft tissues and between normal andabnormal tissues.
6.Intramedullary spread of pathology can be
determined
7.MRI visualizes the fat in the trabecular boneand differentiates the inferior alveolar canaland neurovascular bundle.
-
8/3/2019 Dental Implant - Copy
31/37
Disadvantages1. Scanning time can be long
2. Contraindicated in patient with certainsurgical clips, cardiac pacemakers, firsttrimester pregnancy.
3. Equipment tends to be claustrophobic andnoisy
4. Metallic object should be removed
-
8/3/2019 Dental Implant - Copy
32/37
5.Bone,teeth,air,metallic objects, all appearblack, making differentiation difficult
6.Estimate of bone quality may be problematic
7.Geometric distortion may arise when thehomogeneity of the applied magnetic field isdisturbed.
-
8/3/2019 Dental Implant - Copy
33/37
1. Computer assisted implant imagingAdvantages
a) Highly accurate, with an error margin of lessthan 1mm
b) Injury to any critical structures is avoided
-
8/3/2019 Dental Implant - Copy
34/37
Disadvantagesa) Pulse registration and the shifting of the
headgear will produce inaccurate results.
b) High radiation dosage CT scans limits its usefor navigation in oral surgery
-
8/3/2019 Dental Implant - Copy
35/37
2.Periaical radiographyDisadvantage
a) Requirement of darkroom and 5 minutesdelay due to processing time required
-
8/3/2019 Dental Implant - Copy
36/37
3.Panoramic radiographyDisadvantage
a) The patient must leave the surgical suite andstand or sit still for the procedure
-
8/3/2019 Dental Implant - Copy
37/37
Periaical radiography Panoromic radiography