[Problems of partial dental prosthesis].
Explore the source record for details and available documents.
SEARCH · Search PubMed
Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
STATEMENT OF PROBLEM: Removable partial denture frameworks are complex castings fabricated from high-shrinkage alloys. This may result in difficulty in achieving accurate fit. PURPOSE: The purpose of this study was to evaluate which component(s) of the clasp assembly contact the abutment tooth clinically. MATERIAL AND METHODS: New and existing frameworks with at least 1 conventional prepared occlusal rest were evaluated for fit. The spacing between the bottom of each of the rests of the 50 clasp assemblies and the corresponding rest seat were recorded with vinyl polysiloxane. The fit of each rest was determined with the use of a dial caliper by measuring, in micrometers, the thickness of the record between the rest and the bottom of the rest seat. The Kennedy classification was also recorded. A 2-sample t test was used to evaluate the difference in fit between tooth-tissue supported and tooth-supported designs (alpha=.05). RESULTS: The average space between the rest and prepared rest seat was 193 +/- 203 microm, with a range of 0 to 828 mum. Twenty tooth-tissue frameworks had an average space of 136 +/- 160 microm and 30 tooth-supported frameworks had an average space of 230 +/- 222 microm. The 2-sample t test showed no significant difference for fit between tooth-tissue supported and tooth-supported frameworks (P=.1081). Twenty-four percent of rests had contact in the prepared rest seat. CONCLUSION: The majority of rests evaluated did not contact the intended surfaces.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
OBJECTIVES: Maraş powder (MP) is a kind of smokeless tobacco prepared by a mixture of ash and the powder obtained from the leaves of a tobacco plant called "deli tütün" in the region. In this study, we investigated the physical changes occurring in the oral cavity of MP users. PATIENTS AND METHODS: A total of 92 subjects (5 females, 87 males; mean age 46.6+/-14.3 years; range 21 to 88) who had been using MP were included in the study. Subjects with a history of MP usage of less than one year duration and those who smoked cigarettes were excluded from the study. RESULTS: Of the patients, 86 applied the MP between the lower labial mucosa and gingiva. All the patients had dental discoloration in varying degrees. There were total dental prosthesis in 12 subjects, partial dental prosthesis in two, absence of incisors in four, and dental decay of varying degrees in 30 cases. Forty-six cases had mild, 15 cases had marked, and 12 cases had severe gingival recession. In 22 cases, there were lesions in the labial mucosa where MP was applied, in the form of white plaques (MP leukokeratosis). There were erythroplastic (n=2), leukoplastic (n=2), and aphthous (n=2) lesions, desquamation that could easily be removed by rubbing (n=8), and enduration (n=11). CONCLUSION: In the oral cavity of MP users, especially in the application sites, significant changes that potentially and eventually led to a decrease in the quality and comfort of life were observed. Some of these findings seemed to be precancerous. Further comparative studies with control groups may clarify the possible role of the MP on the occurrence of these changes.