Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “TOOTH ABRASION”

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.

At least 649 records · Page 36Linked to original sources
PubMed1995

Dental attrition of Mayan Tzutujil children--a study based on longitudinal materials.

The purpose of this study was to evaluate dental attrition by measuring attrition volume on all types of teeth during facial growth, tooth shedding and eruption. Dental casts and cephalograms of 7 male and 7 female Mayan Tzutujil Indian children were used. Relationships were found between increase in vertical and horizontal facial growth and increase in attrition on the deciduous canines, first and second molars, permanent incisors and first molars in both arches and in both sexes. Significant increases in attrition were found on the deciduous second molars during eruption of the permanent first molars, and on the permanent incisors and first molars during eruption of the second molars in both arches and in both sexes. The results suggest that the function of attrition is 1) to compensate for increase in vertical and horizontal dimensions during facial growth, and 2) to adjust the occlusal surfaces during tooth eruption and occlusal development. In addition, an attritional index was developed to evaluate attrition among teeth. This index could be used in the future to make comparisons among different populations. Comparisons were made among Class I, II and III molar relations by using the attritional index, showing how it can be used to gain a better understanding of the characteristic patterns of dental attrition.

Adolescent↗
PubMed1994

The effect of stannous fluoride on dentinal hypersensitivity.

Many agents have shown varying degrees of effectiveness on pain resulting from exposed dentine. One which has shown some promising results is stannous fluoride (SnF2). The purpose of the following paper is twofold: to review and summarise the clinical literature pertaining to the relative effectiveness of solutions or gels containing SnF2 in controlling pain associated with dentinal hypersensitivity; and to statistically re-evaluate these studies in combination, in order to develop recommendations for the optimal use of SnF2 for hypersensitivity. Seven blinded clinical studies were identified and reviewed. Five of these compared 0.4 per cent SnF2 gel solution to an identical placebo. One compared a 0.4 per cent SnF2 gel solution and a 0.717 per cent F solution to an aqueous placebo. The final study compared a 0.717 per cent F solution to an aqueous placebo. Statistical power analysis and a combined meta-analysis were used to ensure adequate internal consistency and to contribute to an overall consensus of the efficacy across time. It was concluded that the 0.717 per cent F solution provides a virtually immediate and definable effect, which seems to continue for several months. This effect was present in all subjects used in the study. This solution was applied directly to the sensitive area for one minute and allowed to remain for 3-5 minutes. An additional one minute application was applied if needed. The effect of the 0.4 per cent SnF2 gel appears to be more gradual, perhaps involving a different mechanism of action. This solution requires approximately two to four weeks of continuous treatment to be effective. It was concluded that an effective strategy involving the use of stannous fluoride gel includes the application of the 0.717 per cent F solution in the office, effectively providing immediate relief. The patient would then use the 0.4 per cent SnF2 gel at home in order to achieve the long-term effect. In order to control episodic pain while the gel is developing its effect, a small amount of the 0.717 per cent F solution could be given to the patient for occasional symptomatic application.

Dentin Sensitivity↗
PubMedDate not supplied

Glass ionomer restoratives.

This article gives an overview of the new hybrid (light-cured) glass ionomers, which are a combination of auto-cured glass ionomer and light-cured composite resin. The characteristics of these materials and the different brands available are discussed. A clinical technique for restoration of cervical lesions with these materials is presented.

Acrylic Resins↗
PubMed1994

The prevalence of tooth wear in 14-year-old school children in Liverpool.

The prevalence of tooth wear was assessed in a random sample of 14 year old school children in Liverpool. A total of 1035 children were examined in 10 schools of whom 526 (50.8 per cent) were male and 509 (49.2 per cent) were female. Three hundred and seven children (30 per cent) had exposed dentine, mainly incisally, and this occurred significantly more often in males than females (P < 0.01). Of these children, 80 (8 per cent) also exhibited exposed dentine on occlusal and/or lingual surfaces. This occurred mainly on the occlusal surfaces of the first mandibular molars and the lingual aspects of the upper incisors. A slight positive association was found between tooth wear and the level of social deprivation in the electoral ward in which the school was located.

Adolescent↗
PubMed1994

Clinical evaluation of five adhesive systems.

One hundred cervical "abrasion/erosion" lesions were restored in groups of twenty with All-Bond, Photobond, Denthesive, and Pertac dentin adhesives with resin composite, and Geristore resin-based material. The mean patient age was 63 years. All but seven restoration sites were examined for up to approximately 14 months, and the cumulative retention rates of restorations calculated. At the end of the observation period, the percentage of restorations retained was; All-Bond 69.6%, Photobond 78.2%, Denthesive 42.8%, Pertac 7.5%, Geristore 71.8%, which was in approximate quantitative agreement with laboratory bond strength studies. The relationship of laboratory bond strength tests to clinical performance, and the influence of patient age on the clinical results, are discussed.

Adult↗
PubMedDate not supplied

Adhesive interface between resin and etched dentin of cervical erosion/abrasion lesions.

The interfacial structure between an adhesive composite resin and the dentinal walls of cervical erosion/abrasion lesions etched with 37% phosphoric acid gel for 60 seconds was investigated. Almost all dentinal tubules were occluded with rod-like structural depositions that remained undissolved even after acid conditioning. The hybrid layer between the adhesive resin and surface-demineralized dentin was found to be 0.3 to 3 microns, much thinner than that routinely found in either normal dentin or cariously affected dentin. The hybrid layer was thinnest at the occlusal walls of the cavity where the dentinal tubules run parallel to the cavity surface. The bond strength of adhesive resin to these areas may differ from that to intact normal dentin.

Acid Etching, Dental↗
PubMed1993

[Evaluation of relation between signs of trauma from occlusion and severity of periodontitis].

The aim of the present study was to evaluate the various occlusal interferences, signs of trauma from occlusion and their relations to severity of periodontitis. 32 cases of moderate to advanced adult periodontitis patients participated in the study with a mean age of 37.6 years. All subjects received a complete periodontal examination and occlusal analysis. The results indicated that teeth with various occlusal interferences did not exhibit any greater severity of periodontitis than those without interferences. However, widened periodontal ligament space (PDLS) was frequently seen in teeth with occlusal interference. Two combined criteria were initially suggested to identify the occlusal trauma in clinic. The first criterion included presence of functional tooth mobility plus radiographically widened PDLS. The second, presence of significant tooth wear plus radiographically thickened lamina dura. The results showed that teeth with the first criteria had deeper probing depth, more clinical attachment loss and less alveolar bone support than teeth without these findings. However, teeth with the second criteria had less attachment loss and more bone support than teeth from control group. It was suggested that both of the combined criteria provide better reliability in determination of established occlusal trauma as well as evaluation of adaptive capacity of periodontal structure to increased biting force. The regression analysis demonstrated that given equal clinical attachment levels and similar inflammation, teeth with evidences of functional mobility and widened PDLS had less osseous support than teeth without these findings (P < 0.01). The difference became greater in line with the more loss of clinical attachment.

Adult↗
PubMed1993

Minor axial tooth movement in preparation for fixed prostheses.

In this first of two articles the theory and practice of creating occlusal clearance for restorative procedures without the removal of tooth tissue is discussed. Earlier techniques for producing minor axial tooth movement are reviewed, together with the relevant literature on continuous eruption and occlusal stability. The indications for axial tooth movement and alternative treatment options are also considered.

Dental Occlusion, Balanced↗
PubMed1993

Geriatric prosthodontics: an overview. Part II. Treatment considerations.

This two-part paper discusses treatment considerations for geriatric patients--a population that is on the rise. The first part of this paper examined the effects of aging on general health and on the oral environment. The second part discusses restorative treatment options for geriatric patients with caries, tooth wear, or missing teeth.

Aged↗
PubMed1993

Joint epidemiological longitudinal dental survey in Nigeria, especially in comparison with that of Japanese.

Since 1980 we carried out a longitudinal dental survey in Ile-Ife, as a joint study with the dental school of Ife University, Nigeria, being supported by A Grant under The Monbusho International Scientific Research Program for ten years. One thousand one hundred seventy-one children and adults were examined in the 1991 survey. The data were compared with the data in the previous survey and Japanese survey. Results were as follows: 1) Caries prevalence rate and the average number of DMFT were still very low, especially showing that both the caries prevalence and the average number of DMFT decreased in the rural areas because the attrition proceeded faster than the caries, 2) Nigerian deciduous and permanent dentition were larger than in the Japanese in all items measured, 3) the condylar head was transformed from the round shape to the ultra-flat shape with age, 4) there was a fewer incidence of severe periodontal diseases despite of the marked deposition of calculus, 5) with respect to Nigerian foods, there was no difference between the rainy and dry seasons in both the urban and rural communities, 6) the weaning period of the baby is decided by their mother, taking care of the health of the baby, almost all babies at one year to two years and a few at three years and 7) the menu for the breakfast, lunch and supper of the baby was made considering the nutritional aspect of the baby.

Adolescent↗
PubMed1995

Marginal sealing ability of three cervical restorative systems.

The purpose of this in vitro study was to evaluate the enamel and dentinal marginal sealing ability of three different cervical restorative systems. Class V preparations were made at the cementoenamel junction of 36 freshly extracted premolars. The teeth were randomly divided into three groups of 12 and restored with either a polyacid-modified resin composite ("compomer"), resin composite, or resin-modified glass-ionomer cement. The restored teeth were stored in saline at 37 degrees C for 1 week, thermally stressed for 500 cycles, and subjected to dye penetration testing. The results showed that there was no significant difference in dentinal margin sealing ability among the three materials evaluated. When the margins were in enamel, the resin composite restorations had significantly less leakage than did compomer or resin-modified glass-ionomer cement restorations. The marginal sealing ability of all three materials was significantly poorer in dentin than in enamel.

Analysis of Variance↗