Dentures should not be considered a replacement for teeth. Complete denture (if few teeth left, with poor prognosis); if replacement of missing teeth is very complex or costly D. Indications for RPD's 1. lengthy edentulous span (too long for a fixed prosthesis) 2. no posterior abutment for a fixed prosthesis 3. First, the pieces are assembled and tried against a cast of the opposing dentition. Clipping is a handy way to collect important slides you want to go back to later. About 2 mm of the denture flange borders are left uncovered and a base of quick‐setting plas-ter or stone is poured. Troubleshooting Complete Denture Problems 213Beware of the inferior alveolar nerve! Now customize the name of a clipboard to store your clips. Tongue function and denture‐wearing experience are important prognostic indicators.Denture adhesives come in at least three different forms: powder, cream, and pads. An unused, clean polishing wheel must be used for each abra-sive. 27. In patients with severe resorption of the alveolar ridge, a portion of the inferior alveolar nerve may be exposed (Figure 34.50). These stresses are released in the form of a fracture, and most frequently these appear first as a midline fracture of the maxillary denture.Occasionally, teeth are knocked off a denture by a trau-matic blow, or because the denture tooth was not bonded adequately to the base. Troubleshooting in Complete denture INDIAN DENTAL ACADEMY Leader in continuing Dental Education www.indiandentalacademy.com 2. www.indiandentalacademy. The denture is removed from the cast and checked to make sure that the acrylic is of good quality and covering all the desired areas (Figure36.30).The dentures are fitted together to ensure that they occlude properly (Figure36.31). Treating the Complete Denture Patient222The following pictures demonstrate how a fracture of a mandibular compete denture is successfully repaired. 2. Complete denture The majority of complete denture cases which present in everyday practice can be addressed with the aid of knowledge contained in this instruction manual. 128 BRITISH DENTAL JOURNAL, VOLUME 189, NO. Note the Triad being used to help hold the teeth in place to make the teeth more stable when the matrix is made.Figure 35.13 A matrix is made of polyvinylsiloxane putty.Figure 35.12 Make a matrix of quick-setting plaster. This allows visual access to see that the acrylic is filling the entire area. When the repair is complete, the cause of the fracture should be explored and eliminated if possible. When function is the cause, it usually involves a thin den-ture base, as is common in an immediate complete denture and invariably is associated with a poor adaptation to the ridge as is often seen following resorption during healing. With a little time and focus the prosthesis provided to the patient should provide years of satisfaction and … This not only makes it fit more poorly, it also makes it more brittle and prone to fracture. If you have broken a tooth or the denture in half, or if it is hurting in some way- it is best to get this sorted first so that you have something comfortable to wear whilst a new set is being made. C l i n i c a l D e n t i s t r y , M u m b a i • S e p t e m b e r 2 0 1 4 Problem solving in complete dentures -An overview Complete dentures are artificial substitutes for teeth and tissues. If a putty matrix is used, extreme care must be taken to not flex the matrix, or the sticky wax will break and the teeth will come loose.Resin is applied by the brush‐bead method (Figure35.15) to slightly overfill the prepared area (Figure 35.16). Troubleshooting in Treating the Complete Denture Patient220Remove enough acrylic from the polished surface side of the denture to allow a gap of 8–10 mm cut halfway through the denture (Figure 36.9). “Troubleshooting Dentures” is based on 22 years of experience in denture treatment. The brush is cleaned by dipping it in monomer and drying it thoroughly on a paper towel to remove any residual acrylic which would harden and ruin the brush.35Replacing Teeth onaComplete Denture Denture Troubleshooting - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. The denture pieces are removed from the cast and the area under the fracture site is inspected for any defects. Extra acrylic is added to overbuild the repair site area to assure that there is enough thickness of high‐quality acrylic. Pieces of paper clip cut and bent into a loop will do nicely (Figure36.4). The quick‐setting plaster will not bond with this material and will need to have some sort of mechanical retention provided. The tooth should fit perfectly into the undis-turbed labial area. These are especially good where there is poor ridge height or lack of attached mucosa.Figure 34.49 With the aid of disclosing wax, the frenum area is adjusted with the small-diameter acrylic bur using a slow-speed handpiece.Figure 34.50 In patients with severe resorption of the mandibular alveolar ridge, a portion of the inferior alveolar nerve may be exposed on the surface of the mandible.Figure 34.51 Poor neuromuscular control may be the single most significant factor in the successful manipulation of complete dentures under function.Figure 34.52 Denture adhesive powder is sprinkled on the damp intaglio surface of a denture. Maxilla denture problems. 4. These pieces and the matrix are cleaned and reassembled on the cast to ensure that they can be accurately positioned (Figure36.7). To see the step by step denture fabrication you can go to our denture page or for more detail click here. • Introduction • Fabrication of complete dentures is dependent on technical, biological, and psychologic interplay between the clinician and the patient. In very few cases for short periods of time, adhesive may help keep new dentures in place. This study was carried out on 40 Iraqi patients with an age range between ( 55 – 65 ) years . The rabbet-ing thins the proximal surfaces of the dentures about half-way through the polished side and adds about 3 mm more width to the gap on each piece, totaling about 8 mm on the polished surface side between the pieces. Problem #5: They Don’t Stop Bone Loss Treating the Complete Denture Patient214Figure 34.53 The denture adhesive powder is gently wetted under a small stream of water.Figure 34.54 Permanent soft liners (silicone elastomers) may be indicated and are usually limited to mandibular dentures for the treatment of chronic soreness, bruxism, and in the case where no attached gingiva exists. They offer the advantage of allowing freedom of movement in several directions.Some abutments are designed to screw into an implant. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The matrix is luted back into place and “tacked” to both proximal areas with sticky wax. Figure 36.23 Remove enough acrylic from the polished surface side of the denture to allow a gap of 8–10 mm.RABBETCASTFigure 36.24 “Rabbeting” provides an increased surface area that affords a stronger joint between the old and new acrylic.Figure 36.25 Paint Al‐Cote, a tinfoil substitute, on the area under the site to be repaired.Figure 36.26 The denture parts are replaced and luted in place with sticky wax.Figure 36.27 Use a disposable brush dipped in the polymer powder to form a small bead on the wetted end of the brush.Figure 36.28 Dip the brush in monomer and dry it thoroughly on a paper towel to remove any residual acrylic and prevent ruining the brush. These resemble upholstery tacks and are cemented into endodon-tically treated teeth.Amalgam also is sometimes used to make overdenture abut-ments (Figure 37.2) and usually is placed in endodontically treated teeth. A. Repairing aBroken Complete Denture 227well as porcelain teeth, and fractures through the teeth themselves can occur in both porcelain and acrylic teeth, although more often in porcelain teeth.In any case involving a broken denture or debonded tooth, the parts are reassembled by hand, held together temporarily with a sticky wax, and stone is poured into the base to make a cast so that the fracture can be repaired with an autopolymerizing resin. Teeth of the same shade, shape, and size as the original teeth are carefully selected and fixed in place with sticky wax (Figure35.11) and checked against a cast of the opposing dentition or the opposing denture to ensure they do not interfere with the occlusion. A magnetic metal stud is placed in the endo-dontically treated tooth abutment (Figure37.3) or the mag-nets can be cast to a metal stud (Figure 37.4). A plaster matrix is made on the labial or buccal side of the tooth being replaced (Figure35.4). Care must be taken to not polish the plastic teeth.If several teeth have fractured (Figure35.9), the broken teeth are carefully removed (Figure35.10) and the denture areas palatal to or lingual to the debonded or fractured teeth are reduced. One must look closely to discern the repair site because the repair acrylic blends together so precisely with the original acrylic (Figure 36.32). Published 2020 by John Wiley & Sons, Inc.Companion website: www.wiley.com/go/driscoll/denture215Occasionally, teeth are knocked off a complete denture by a traumatic blow, or because the denture tooth was not bonded adequately to the base. Cap attachments with stainless steel housings are pressed over the transfers (Figure 37.7). The basic design of dentures hasn’t changed in a long time because suction is the best possible way to keep them in place. The patient may have worn out, lost, or broken the mate to the one they are wearing and hope that the one they provide to the dentist can be adapted to fit their current denture. The approximating surfaces are beveled so that there is a 3 mm gap on the polished surface and a 2 mm gap on the cast side (Figure 36.8). And, once the dentures have been delivered, this course covers problems from the borders being over extended to the fit and function of the denture. The procedure for making a complete denture is as follows: Emergency treatement. Published 2020 by John Wiley & Sons, Inc.Companion website: www.wiley.com/go/driscoll/denture21936.1 Repairing Fracture ofComplete DenturesThe midline fracture of the maxillary complete denture is the fracture most often seen in dentures (Figure36.1). Red repair resin is used here on this technique denture. See our Privacy Policy and User Agreement for details. We generally discourage the rou-tine use of denture adhesives. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Special burs are required for adjustment of silicone elastomers. Treating the Complete Denture Patient224replaced and luted in place with sticky wax (Figure36.26). Custom trays are most easily made on accurate Contents • Introduction • Review of Literature • Causes • Complaints • Conclusion • References 3. Denture may fracture during the function, or may drop on a hard surface. The pieces are replaced in position on the cast and checked for accuracy.36Repairing aBroken Complete Denture The replacement tooth for the missing tooth is placed in the matrix and secured in place with sticky wax (Figure35.6).The matrix containing the tooth is placed into position on the denture (Figure 35.7) and can be held there with sticky wax. Sticky wax is used to lute these braces to the denture base. The tissue side is checked for irregularities and these are repaired or smoothed. These are “tacked” to the teeth with sticky wax (Figure36.3). Denture Troubleshooting Guide *Burning sensations are usually caused by pressure on a nerve as it leaves nasopalatine or by under-cured bases. The easiest method of blocking out the ridge area away from the fracture site is to use polyvi-nylsiloxane putty. Troubleshooting Complete Denture Problems 213 Beware of the inferior alveolar nerve! If this step is forgotten, the acrylic will harden and the brush will be ruined (Figure36.28).
2020 troubleshooting in complete denture