rubber dam application
TRANSCRIPT
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Rubber dam Application
Dr. M Arsalan Zubair MDS Trainee (2nd semester)
Operative DentistryDow Dental College
DUHS
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Indications for rubber dam placement• moisture control• visibility• patient protection• patient treatment
Contraindications for rubber dam placement
• Claustrophobic patients• Asthamatic patient• Mouth breathers• Partially erupted or hyperplastic gingiva• Patients that need anesthesia to tolerate clamp• Severe crowding• Epileptic patient
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Contents
• Armamentarium
• Methods of Application
•Errors during Placement and removal
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Rubber Dam Sheet• Light and Dark
• It has shiny and dull surface, dull should face the occlusal side
• Thick Sheet- class V with butterfly clamps
• Thin Sheet- passing easily into tight contact
Patient Napkin
• Why important????
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• Ivory- type Stokes-type clamp forceps• Ivory type- limit rotation of retainer• stokes type tip design- permits rotations
Rubber dam forceps
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Lubricant• Lubrication Of Dam• Water soluble • Vaseline should not be used why????• Rather it can be applied as lubricant
for lips
Rubber Dam holders
• Strap holders• Woodbury frames• Frame holders• Young’s frame• Nygard-ostby frame• Materials : Metals and plastic
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• Teeth themselves or stone cast can be used
• Rubber dam stamp• Templates
Hole positioning guides
• Retainers- retract gingival tissue.• Retainer should contact the
tooth on its four line angles• The prongs of some retainers are
gingivally directed (inverted)• Why????
Retainers
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The jaws of the retainer should not extend beyond the mesial and distal line angles of the tooth because :
(1) interfere with matrix wedge placement,
(2) gingival trauma
(3) a complete seal around the anchor tooth is more difficult to achieve.
• Wing or wingless Retainer .What is the use???
• Bow Should be tied with floss .Why?????
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Basic Kit of Retainer should a Student have with it self
Winged clamps:• Butterfly-type clamp for anterior teeth
• Universal premolar clamp • Mandibular molar clamp
• Maxillary molar clamp
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S-G(Silker-Glickman) Clamp
Indication • Severe Broken Down tooth
• Placed on a tooth proximal to the one being treated.
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Methods of tying floss
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Rubber dam punch
The rubber dam punch have:a) rotating metal
table or anvils (disk) with holes of varying sizes
b) a tapered, sharp-pointed plunger
Ivory type
Hygienic type
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Rotating Table or Anvils
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• incisors and mesial surfaces of canines.
• canine
• posterior teeth
• premolars
• molars
• endodontic therapy
• first premolar to first premolar
• first molar to the opposite lateral incisor
• anteriorly to include the lateral incisor on the opposite side of the arch
• one to two teeth distally, and extend anteriorly to include the opposite lateral incisor
• as far distally, and extend anteriorly to include the opposite lateral incisor.
• only the tooth to be treated is isolated
Isolation according to Operation
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Now Repeat it….
• For the maxillary central incisors. Holes are positioned approximately 1 inch (25 mm) from the superior border of the dam
• For the mandibular the posterior anchor tooth that is to receive the retainer
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Methods of Placement
• Applying the dam and retainer simultaneously
• Applying the dam before the retainer
• Applying the Dam after the retainer
• Cervical retainer placement
• Substitution of a retainer with a matrix
• Split Dam Technique
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APPLYING THE DAM AND RETAINER SIMULTANEOUSLY
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• Bow being passed through the posterior anchor hole from the underside of the dam
• Gathering the dam to facilitate placement of the retainer
• Positioning the retainer on the anchor tooth
• Stretching the anchor hole borders over and under the jaws of the retainer.
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Rubber dam, clamp, and frame Dam, clamp, and frame carried to mouth as one unit and placed
Clamp in place with four-point contactand rubber tucked under the wings
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Split Dam TechniqueIndication
Insufficient coronal structure Single fix prosthesis
Abutment tooth for bridge Partially erupted tooth
Steps
•Two overlapping holes are punched in the dam
•Cotton roll is placed under the lip in the mucobuccal fold.
•Sheet is stretched over the three tooth, distal side each
•Clamp is placed on one side and other tied with ligature
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Technique
Two overlapping holes are punched in the dam.
The rubber dam is stretched over the tooth to be treated and over one adjacent tooth on each side. The edge of the dam is carefully teased through the contacts on the distal sides of the two adjacent teeth.
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APPLYING THE DAM BEFORE THE RETAINER
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Applying the Dam after the retainer
After the clamp is placed, the dam is attached to the frame and gently stretched over the clamped tooth with the index finger ofeach hand.
The clamp is tested for a secure fit with gentle finger pressure (alternately) on the buccal and lingual aspects of the clamp apron.
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SUBSTITUTION OF A RETAINER WITH A MATRIX
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• Complete preparation of the terminal tooth with the retainer in place.
• Stretch the dam distally and gingivally as the clamp is being removed.
• The clamp is removed before placement of the matrix (Toffelmire)
• To maximize access and visibility the mouth mirror is used to reflect the dam distally and occlusally
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Example Isolation: From Molar to opposite Lateral Incisor
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Step 1: Testing and Lubricating the Proximal Contacts
Step 2: Punching Holes
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Step 3: Lubricating the Dam Step 4: Selecting the Retainer
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Step 5: Testing the Retainer’s Stability and Retention
Step 6: Positioning the Dam over the Retainer
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Step 8: Positioning the Napkin
Step 7: Applying the Napkin
Step 9: Attaching the Frame
Step 10:Passing the Dam through thePosterior Contact
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Step11:Applying the Anterior Anchor (If Needed)
Step 12:Passing the Septa through the Contactswithout Dental Tape
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Step 13:Passing the Septa through the Contactswith Dental Tape
Step 14:Inverting the Dam Interproximally
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Step 15:Inverting the Dam Faciolingually
Step 16:Confirming Proper Application ofthe Rubber Dam
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Step 18:Inserting the WedgesStep 17: Checking for Access and Visibility
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Removal of Rubber Dam
• Step 1: Cutting the Septa Step 2: Removing the Retainer
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Step 3: Removing the Dam Step 4: Wiping the Lips
Step 5: Rinsing the Mouth and Massaging the Tissue
Step 6: Examining the Dam
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In Children
• Isolation is from posterior tooth to the canine on the same side.
• Rubber dam sheet-Small, attach to frame
• Napkin should not be use
• Prongs engaged more gingivally
• Retainers:No. 27 and Ivory No. W14
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Errors in Rubber dam application• An off-center dam- occlude the
patient’s nasal airway.
• punched arch form is too small,the holes are stretched open around the teeth, permitting leakage
• If the punched arch form is too large- the dam wrinkles around the teeth and may interfere with access
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• Inappropriate retainer: may be too small
(1) Breakage (2) Unstable on the anchor tooth
(3) Impinge on soft tissue (4) Impede wedge placement
• Safe to tissues
• Be careful sheet should not tear
• Scissors can hurt tissue during removal of dam
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THANK YOU