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Biomedical subjects

S M Parel

Publications and source records attributed to S M Parel.

14 recordsLinked to original sources

Electromyographic activity of the jaw-closing muscles in patients with osseointegrated implant fixed partial dentures.

The control of postural and synergistic jaw reflexes involves interrelated sensory input from receptors in the jaw muscles, temporomandibular joint, periodontal ligament, and mucosa. This investigation was done to determine whether a decrease in intraoral sensory afferent discharge significantly altered the onset of the jaw-unloading reflex. The subject population consisted of three groups with 10 subjects in each group. Group 1 had maxillary and mandibular natural teeth and group 2 consisted of edentulous subjects with complete dentures. Group 3 consisted of edentulous subjects with maxillary complete dentures and mandibular complete implant-supported prostheses. The unloading reflex was initiated with a muscle-unloading device and recorded with a storage oscilloscope. A one-way analysis of variance found no significant differences in the unloading-reflex latency for the masseter or temporal muscles among the three experimental groups (p less than 0.05).

Dental Implantation, Endosseous

The use and fabrication of a self-retaining surgical guide for controlled implant placement: a technical note.

A technique for using a surgical guide construction with a self-retaining feature, which has proven to be a significant improvement for stage 1 surgical procedures, is described. This design is more convenient to use than previously described occlusal extension splints. It maintains the concepts for ideal fixture placement that have proven so valuable in creating both a functionally and esthetically uncompromised prosthesis supported by implants.

Dental Implantation, Endosseous

The United States and Swedish experience with osseointegration and facial prostheses.

A survey of experience treating patients with extraoral implants for facial prosthesis retention in 13 United States centers and in Sweden has been completed. Patients who have not received radiation for elimination of malignant disease can be treated with reasonably good expectations for long-term success. Reported success rates indicate that patients who have received radiation should be selected carefully and treated with caution, since overall success rates in this category are disappointingly low.

Eye, Artificial

Immediate fixture placement: a treatment planning alternative.

The rationale and possible clinical applications of an immediate fixture placement technique are described. Although this concept may be a somewhat radical departure from the conventional mandibular protocol, there are significant potential patient benefits with no apparent change in anticipated fixture survival rates. A similar approach in the maxilla may be less practical with most presenting dentitions, but there is evidence that further research may make immediate fixture placement equally appropriate in this arch.

Alveolar Bone Loss

Custom-made perforated cyst decompression stents.

A method of facilitating cyst decompression has been presented. By using available materials and equipment, perforated silicone stents can be made to specific dimensions in a relatively short time period for this purpose.

Cysts

Modified denture flask for three-piece ear molds.

A method of modifying a conventional large denture flask to accomodate a three-piece ear mold has been presented. The modified flask is useful in producing accurate castings with a decrease in the incidence of stone fracture.

Dental Instruments

Single-visit hollow obturators for edentulous patients.

A method of fabricating a simple hollow obturator for edentulous patients was described. This procedure can be accomplished in a single office visit using readily available materials. The use of a relatively long-lasting soft reline material for obturators allows stable, comfortable, and effective obturation for many edentulous patients with recently created maxillary defects (Fig. 6). The hollow prosthesis is lightweight and sufficiently flexible to allow relatively simple placement in retentive undercut regions. Direct finger placement of the material insures complete duplication of all desired tissue undercuts. The soft reline material may also serve as a final impression of the defect when fabrication of the definitive prosthesis is undertaken.

Denture, Complete, Immediate

Reproducing the vertical-lateral defect space in obturator construction.

A method of incorporating vertical and horizontal tissues in an obturator impression using an open palate impression tray is presented. The laboratory technique of obturator construction from this impression allows for a definitive (heat-cured) or interim (cold-cured) prosthesis for an edentulous or dentulous patient.

Dental Impression Technique

Compressive facial splints.

A method of constructing long-term compressive splints for the regions of the head and neck using available materials has been described. These splints have been useful where continuous pressure is needed to promote healing or enhance treatment over long periods of time.

Face