Fluid control and_tissue_management
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Transcript of Fluid control and_tissue_management
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Fluid Control in dentistry
A.SELVA AROCKIAM3RD YEAR BDSCSICDSRMADURAI
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Fluid ControlObjectives
-Dry Field-Acess and Visibility-Patient Protection-To improve operating Efficiency
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Means of Fluid ControlMechanical Chemical
1.Rubber Dam
2.High Volume vaccum
3.Saliva Ejector
4.Svedopter
5. Cotton Rolls
6.Absorbent Pads
7.Gingival Retraction cord
8.Gauze Pieces
1.Drugs
2.Local Anaesthesia
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Rubber DamRubber Dam Kit Should have the following items in it
1.Rubber Dam Sheet
2.Rubber Dam Clamps
3.Retainer forceps
4.Rubber Dam holder
5.Rubber Dam Punch
6.Lubricant
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1.Rubber dam sheet
Size 5”X5” or 6”X6”
Thickness
Thin .006”
Medium .008”
Heavy .010”
Extra heavy .012”
Special heavy .014”
Color:-Blue and Green preffered
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2.Rubber dam Clamps
Parts
• 2 Jaws
• 1 Bow
• 4 Prongs
Types
• Winged
• Wingless
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3.Retainer Forceps
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4.Rubber dam holder
It is a U shaped frame
plastic Metal
(young’s frame)
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5.Rubber dam punch
Used for making holes in the dam
Parts
•Rotating metal disc
•Sharp pointed plugger
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High volume vaccum•Excellent lip retractor
•Used during preparation phase
Advantages
•Toxic material is readily removed
•Decreases treatment time
•Removes debris
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Saliva ejector
•Used as an adjunct to high volume evacuation
•Placed in the corner of the mouth opposite the quadrant being treated
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Svedopter
•As metal saliva ejector with attached tongue deflector
•Used when patient is in upright position
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Drawbacks•Access to mandibular surfaces of teeth limited
PositionAnterior part is placed in incisor region with tubing under patient’s arm
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Cotton rolls
With/without anaesthesia
Prefabricated/loose
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Gauze pieces•Supplied in pieces of 2”x2” or larger
•Act as throat screens
•Better tolerated by delicate tissues
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Absorbent pads/wafers
•Made up of cellulose
•More absorbent than cotton rolls or gauzes
•Commonly used inside the cheeks to cover the parotid duct
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Chemical methodsDRUGS
1.Antisialogogues
GIT anticholinergics
Commmonly used are
•Methantheline bromide
•Propantheline bromide
•Clonidine hydrochloride
2.Antianxiety drugs
•Diazepam
LOCAL ANAESTHESIA
•More comfortable
•Less sensitive
•Patient is less anxious
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Retraction of gingival tissues
Mechanical
•Copper band
•Retraction cord
•Rubber dam
Chemicomechanical
Vasoconstrictors
•Epinephrine
•Aluminium chloride
•Ferric sulphate
•Alum
Surgical
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Mechanical methods 1.COPPER BAND
•Used to carry impression material as well as to displace gingiva to expose the finish lines
•Can cause njury to gingival tissues
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2.Retraction cords
•Braided /non braided
•Plain /impregnated
It causes
•Displacement of free gingiva
•Transient dehydration of tissues
•Decreased bleeding
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Technique for placement of cord
1.Retracting the cord from the bottle
2.Cord twisted
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3.Loop of cord formed around the tooth and held tightly
4.Cord should be inserted starting from the mesial surface of the tooth until the distal surface
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5.Cord should be tucked into the
sulcus progressively
6.Holding of cord
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7.Angling of instrument toward the root
8.excess cord cut off near interproximal area of mesial surface
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9.After cutting off the excess at the mesial end the disal end of cord is tucked until it overlaps the tucked mesial end
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Surgical methods1.Rotary curretage(Gingetttage)
Requisites
•Absence of bleeding from probing from gingiva
•The depth of sulcus is less than 3mm
•Presence of adequate keratinised gingiva
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Technique
Torpedo diamond is used to do gingettage along with finish line preparation
A retraction cord is used to arrest bleeding in the ginggetaged area
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2.Electrosurgical retraction
Denotes surgical reduction of sulcular epithelium using using an electrode to produce gingival retraction
Also known as surgical diathermy
Indications
•In areas of inflammed gingival tissue
•In cases with gingival proliferation around finish lines
Contraindications
•Patients with cardiac pacemakers
•Use of topical anaesthetic avoided
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Advantages
•Sophisticated technique
•Little or no bleeding
•Quick procedure
Disadvantages
•Technique sensitive
•Difficult to control heat dissipation
•Excessive pressure may cause tissue damage
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Types of current used
•Unrectified damped current
•Partially rectified damped current
•Fully rectified current
•Fully rectified filtered current
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Electrosurgical unit
Two electrodes attached to each unit
•Surgical electrode
•Ground electrode
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Principles
oLocal anaesthesia should be given
oAromatic oil applied to vermilion border of the lip
oGrounding done before usage of electrode
oLight pressure should be applied
oElectrode should never be placed stagnant at any point
oNo dragging /charring the tissues
Proper power
setting
Swift passage of
electrode
Rest interval b/w
strokes
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1.Technique for gingival sulcus enlargement
•J shaped electrode used
•Speed of probe 7mm/s
•Tissue debris cleaned
•Four motions involved
Electrode run in facial, mesial, lingual and distal direction
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Incisions for gingival crevice enlargement
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Sulcus wiped out with hydogen peroxide
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2.Technique for crown lengthening
The diamond is held such that one of its surfaces align the tooth surface
Crown lengthening completed
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3.Technique for removal of edentulous cuff
Edentulous cuff
Removal using loop electrode
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