Fabrication of a multi-applicable removable intraoral denture system for rodent research.

The objective was to engineer an inexpensive intraoral removable denture system for rodents that can be utilised in numerous oral health research applications. At the forefront is biofilm research related to Candida-associated denture stomatitis. Previously described intraoral devices are primitive and inadequate. The denture system was engineered consisting of a fixed part that is anchored to the posterior palate by orthodontic wires and acrylic resin and a removable part fitted to the anterior palate that is retained by magnets embedded in the fixed part. Both parts are custom fitted to the rodent palate by impression making and cast fabrication. Rats fitted with the intraoral denture system maintained body weight and normal activity with the device maintaining integrity and durability for upwards of 8 weeks. The denture system was used successfully to establish a working model of denture stomatitis. This newly engineered inexpensive intraoral removable denture system for rodents can be utilised in numerous oral health research applications, including denture-associated infections, biofilms and a variety of biomaterial applications. The removable portion is advantageous for longitudinal analyses and charging/discharging of biomaterials.

Temporary implant-supported prosthesis for immediate loading according to a chair-side concept: technical note and results from 37 consecutive cases.

BACKGROUND: During the last years, focus has been paid to implant treatment using immediate function protocols, and different approaches to provide patients with temporary constructions have been presented. Most of these techniques involve dental technicians producing the temporary construction, for example, rebuilding existing dentures, acrylic bridges, etc. PURPOSE: The purpose of this prospective clinical study was to evaluate the clinical outcome of a chair-side technique of a cost-effective temporary prosthesis. Fixture survival rate and risk of temporary bridge failure were analyzed. MATERIALS AND METHODS: Thirty-seven partially or totally edentate patients (18 female and 19 male; mean age: 66.7 years) treated with chair-side manufactured temporary restorations (QuickBridge, BIOMET 3i, Palm Beach, Fl, USA) for immediate loading have been evaluated. The prostheses extended from two unit bridges supported by two implants to full-arch construction supported by six implants. The temporary prostheses were monitored from the day of surgery and delivery to the time of replacement with a permanent prosthetic construction 3 to 6 months later. RESULTS: No implants were lost during the observation time. One (3%) temporary prosthesis fractured and additional two (6%) loosened during the follow-up time. CONCLUSIONS: The study indicated that the tested chair-side concept for manufacturing of temporary prosthesis for immediate loading of dental implants is a viable approach.

Bondsteel fixed partial denture: a provisional indirect technique for in-the-field dental emergencies.

This article presents a modified resin-bonded fixed partial denture technique of replacing a single missing anterior tooth under limitation of material and time. This technique involved a small section of an oral surgery arch bar that was bent and fitted passively into the grooves that were prepared in the lingual of the abutment teeth. A polycarbonate crown was fitted passively on the arch bar by a thin layer of Vaseline. The polycarbonate crown was then filled with acrylic resin to bond the polycarbonate crown and the arch bar together. The result provides an esthetic appearance and a 4-month clinical success without complication. Thus, this technique is a short-term solution for clinics that have limited resources for a definitive treatment.

Reassessment of die-spacer with dynamic loading during cementation.

The authors previously reported a reduction in crown seating discrepancies of approximately 200 microns resulting from the application of dynamic forces during cementation. Previous in vitro die-spacer studies used static loads with large seating discrepancies unrepresentative of clinical practice. This investigation reassessed paint-on die-spacer for its effect on completeness of seating and retention when dynamic seating was used. A series of seven complete crowns was made for each of three extracted human teeth by using 0 to 6 coats of spacer. Index marks were used to measure crown position before and after cementation. Mean seating discrepancies indicated complete seating for all groups of crowns irrespective of the number of coats of die-spacer. An analysis of variance demonstrated no significant differences in the degree of seating. However, crowns made from dies without spacer were significantly more retentive (p less than 0.05) than those made from spaced dies.

The use of a prosthetic speech aid for a laryngectomized esophageal speaker with right hemiparesis of the tongue: a case report.

A dental-palatal prosthetic device, which had been demonstrated to aid laryngectomees who use the glossal press method of esophageal speech, was used on a patient whose primary method of air charging was bilabial plosive injection and who had a right hemiparesis of the tongue. Cointervention of a prosthodontist and a speech pathologist is described.