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Results for “Denture Repair”

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At least 145 records · Page 8Linked to original sources
PubMed1995

Clinical performance of resin-retained fixed partial dentures bonded with a chemically active luting cement.

A clinical study was undertaken to review resin-retained fixed partial dentures bonded with a chemically active luting cement during a 4-year period. One hundred thirty-seven fixed partial dentures were reviewed of which five had failed because of a nonbonding failure (esthetics, trauma, fracture) and 47 (36%) had failed after a bonding failure, of which 72% were rebonded. The mean time of failure was 10.9 months (SD 9.8). The failure rate appeared to be affected by position, use of a rubber dam, and the fixed partial denture design, although no one factor reached conventional statistical significance.

Chi-Square Distribution↗
PubMed1996

Effects of improvements of poorly fitting dentures and new dentures on masticatory performance.

The effect of four modifications to improve the fit and maxillomandibular relationships of poorly fitting dentures and the insertion of new dentures on masticatory performance was assessed in 21 denture wearers. A 2-week adaptation period was allowed for each of the four modifications and 3 weeks and 12 weeks of adaptation for new dentures. The preferred side masticatory performances were not appreciably affected by either the modifications to improve the fit of the original dentures or the new dentures. In most instances there was a slight decline in performance. Three denture modifications caused significant declines in the carrot-swallowing threshold performances and the new dentures in the peanut-swallowing threshold performance. In other words, the denture wearers had a greater percentage of coarse particles in their bolus ready for ingestion when they chewed with altered or new dentures compared with original dentures. However, they chewed faster and applied fewer chewing strokes with their modified and new dentures. A steady but gradual improvement in the mean performance score with carrots was noted with time after the insertion of new dentures. Dentists and patients need to understand that adaptation to new or modified old dentures may be a long, drawn-out process for some patients.

Adaptation, Psychological↗
PubMed2001

Initial prosthetic treatment.

This article describes measures designed to provide short-term solutions to existing RPD problems and to establish an optimum oral environment for the provision of definitive prostheses.

Denture Rebasing↗
PubMed1989

My year in vocational training: highlights and horrors.

I am now drawing towards the end of my year in Eastbourne as a vocational trainee on the Brighton Scheme. Eastbourne is a busy seaside resort on the south coast. Rather a lot of 'grannies' reside there; but contrary to popular belief I do not spend all day, every day making and repairing dentures! The work is varied and interesting and I am spending a happy year consolidating my knowledge and becoming more confident at practising dentistry. Here are a few of the best and worst parts of the year.

Education, Dental↗
PubMed1990

DIY dentures.

Explore the source record for details and available documents.

Adult↗
PubMed1995

Immediate addition to acrylic partial dentures.

The conventional method of adding teeth to an existing prosthesis has the disadvantage that patients must be without their dentures while the teeth are added. Whilst a new immediate denture avoids this, it means that the patient will have to grow accustomed to the shape of a new polished surface. The method described in this paper eliminates these problems by making an immediate addition to the existing partial denture. Additionally, the technique has been found to be beneficial to those patients who are unable to tolerate conventional impression taking procedures.

Acrylic Resins↗
PubMed1996

DIY dentures--a case report.

Minor self adjustments to dentures is a common finding. This case report describes do-it-yourself major adjustments to a removable prosthesis in an attempt to convert it to a fixed prosthesis and the resultant damage to the dental tissues.

Adult↗
PubMed1997

Complete dentures in the prosthetic rehabilitation of elderly persons: five different criteria to evaluate the need for replacement.

The purpose of this study was to examine the condition and functional properties, as well as adjustment and replacement needs, of 288 complete dentures worn by 144 inhabitants of Helsinki over 75 years old. Five different criteria to evaluate the need for replacement were used: (I) criteria based on Oral Health Surveys-Basic Methods (WHO, 1987); (II) criteria based only on the clinical data collected during the examination; (III) criteria based only on examiners' subjective opinion of the condition of the dentures; (IV) criteria based on clinical data as well as examiners' experience and consultation with the patient; (V) criteria based only on patients' subjective opinion. Depending on the evaluation method used, 10-84% of the dentures were judged to be in need of replacement. Strict objective evaluation methods produced the highest figures for replacement need, and method (I, WHO, 1987) the lowest. The most justifiable replacement percentage (26%) was achieved when the dentist assessed treatment need together with the patient. This study documents the multiple subjective and objective difficulties related to the wearing of complete dentures. The study also highlights the well-recognized importance of regular annual reexaminations for those wearing complete dentures and the assessment of need for adjustment of the dentures. It also demonstrates that successful treatment decisions cannot be made solely on the basis of clinical examination or a dentist's subjective opinion, but should be formulated in close consultation with the patient.

Aged↗
PubMed1999

A clinical evaluation of 76 implant-supported superstructures in the composite grafted maxilla.

The aim of the study was to evaluate the material behaviour and nature of implant-supported superstructures in function. A total of 37 overdentures, 26 fixed partial and 13 fixed full dentures with a mean lifetime of 40 months were clinically evaluated in relation to damage, occlusion and articulation, parafunction, retentive devices, hygiene and speech problems. In general 70% of all superstructures were damaged. Fixed partial dentures were significantly less damaged than overdentures and fixed full dentures (P<0.001). A significant high percentage of newly gained parafunction was found (P<0.05).

Adult↗
PubMed2003

Removal of a metal-ceramic fixed partial denture with a loose retainer.

In clinical practice, it is necessary to remove a ceramic-veneered fixed partial denture when an abutment becomes loose. When possible, the fixed partial denture is removed in a single piece, allowing recementation when appropriate. A 1-piece removal is challenging, often putting the veneer and abutment teeth at risk for damage. This article describes a technique for fabricating and using a 2-piece matrix that both protects the prosthesis and better directs removal forces along the long axis of the abutments.

Acrylic Resins↗
PubMed2002

Prosthetic complications in an implant-retained mandibular overdenture population: initial analysis of a prospective study.

STATEMENT OF PROBLEM: The clinical success of implant-retained, tissue-supported mandibular overdenture prostheses has been documented. However, few studies have evaluated the return visits and associated cost required to maintain these prostheses. PURPOSE: The purpose of this investigation was to evaluate the amount of maintenance required to provide acceptable and satisfactory implant-retained mandibular overdentures in a prospective clinical trial. MATERIAL AND METHODS: Fifty-eight patients received new maxillary and mandibular complete dentures followed by placement of microthreaded/TiOBlast implants in the mandibular left and right canine regions. At 3 months, ball abutments were placed, and the mandibular prostheses were relined to receive Dalla Bona-type ball housings (baseline). Prostheses were prospectively evaluated, and adjustments were made at 3-, 6-, 12-, 24-, and 36-month recall visits and at nonscheduled visits for 9 types of prosthetic complications. RESULTS: Of 58 patients, 6 required no adjustments. The remaining 52 patients made 327 return visits (including 194 nonscheduled visits) for prosthesis and/or abutment adjustments. One hundred and fifteen practitioner hours were required to provide prosthetic solutions to patient concerns at the return visits. The total estimated cost for all professional and laboratory services was $12,624.00 ($218.00 per patient). CONCLUSION: Although mandibular implant-supported overdentures with Dalla Bona-type ball attachments are an acceptable treatment option for edentulous patients, routine maintenance is required to ensure successful long-term outcomes.

Adult↗
PubMed2001

The effects of glass fiber reinforcement at different concentrations on the transverse strength, deflection and modulus of elasticity of a provisional fixed partial denture resin.

This study focused on some mechanical properties such as the transverse strength, maximal deflection and modulus of elasticity of a resin reinforced with untreated, chopped form glass fibers at different concentrations. A Teflon mould was used to prepare four groups of specimens. The specimens were prepared with different concentrations of the glass fiber to the mass of the powder/liquid mix (0.5, 1, 1.5%), and a mix without fiber was used as the control group. All the specimens were subjected to transverse testing with a cross-head speed of 5 mm/min. The load to fracture for each specimen with the maximum deflection at the point of loading in a three-point load test was recorded. The transverse strength of 0.5% fiber concentration was 54.45 MPa. The lowest value was 49.67 MPa for the 1% fiber concentration. The highest mean strength was for the specimens reinforced with 0.5% glass fiber. This mean was higher than for the mean of the control "without fiber" specimens. The specimens demonstrated an insignificant decrease in the transverse strength and the maximum deflection when the fiber concentration was increased. The inclusion of 1% glass fiber reduced the transverse strength, although the result was not statistically significant.

Denture Repair↗
PubMed1986

Inaccuracies and defects in frameworks for removable partial dentures.

We studied the accuracy of 167 removable partial denture frameworks made in five commercial dental laboratories according to detailed instructions given by dental students, under the supervision of experienced teachers. Fewer than one half of the frameworks proved to be perfect. Some of the faults were accepted in the clinic, but 42% had to be corrected: 26% in the clinic, and 16% in the laboratory. Laboratory problems could be blamed for two-thirds of the faults, and one-third seemed to be attributable to the clinic. The advantages of, for example, new impression materials seemed to disappear under other factors.

Denture Design↗
PubMed1991

The relationship between failure and design in conventional bridgework from general dental practice.

A total of 142 failed bridges constructed in general dental practice were assessed for design factors that might relate to failure. The overall mean age of the bridges at failure was 6.2 years; anterior and complex bridgework had a mean age of about 5 years, compared with 7.5 years for posterior bridges. The lifespan of the bridgework was significantly correlated with the number of retainers but not with the number of units. Bridges with one or two retainers had an average lifespan of just over 7 years, whilst those with three or more retainers had been in service for, on average, only 4 years. The practical difficulties of constructing multi-abutment bridgework could account for this difference. One hundred and ninety-one of the 346 retainers were porcelain bonded to semi non-precious metal crowns, and had a mean lifespan of 3.7 years, whilst those that were gold based lasted at least twice as long. Post crowns as retainers survived on average for 6.2 years.

Acrylic Resins↗