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Results for “TOOTH ABRASION”

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At least 1,045 records · Page 58Linked to original sources
PubMed1983

The detection and prevalence of reactive and physiologic sclerotic dentin, reparative dentin and dead tracts beneath various types of dental lesions according to tooth surface and age.

The pulpo-dentinal complex responds to external injuries with dentin sclerosis (DS), dead tracts (DT), or reparative dentin (RD). This investigation correlates the prevalence of these responses with age, sex, type and surface location of tooth lesions (caries, restorations, attrition, abrasion and erosion) utilizing ground sections, microradiographs and decalcified paraffin-embedded tooth sections treated with the Pollak trichrome stains (270 teeth from 113 patients). The main response to caries, restorations and erosion was DS, followed by RD and DT. DS, RD and DT occurred equally in any tooth, on any tooth surface and even beneath the same lesion. DS did not necessarily prevent RD. Root and furcation DS and RD in the floor of the pulp chamber and root canals were unrelated to particular lesions but did relate to increasing age. Root DS extended from apical to cervical area with increasing age. Beneath caries and restorations DS and RD were more prevalent in males, but DT was more prevalent in females. Pollak staining of decalcified paraffin sections for DS was approximately 80% as accurate as ground sections and microradiography. In pulp studies, where the result is contrary to previous experience, the Pollak stains reveal whether DS has decreased dentin permeability.

Adolescent↗
PubMed1990

[Changes in the surface microrelief and the loss of dental enamel after the use of an abrasive spray of sodium bicarbonate].

Alterations of the surface dental microtopography and enamel loss due to the use of an air-abrasive system on polished and no-polished surfaces of extracted teeth, have been evaluated by scanning electron microscopy, and surface roughness and weight measurements. Results show irregular depressions and significant increased surface roughness on no-polished enamel surfaces while polished enamel surfaces are very lightly affected by the air-abrasive system. Enamel loss expressed in weight % attains 1%-5.3% after use of an air-abrasive system.

Bicarbonates↗
PubMed1989

[Relationships between occlusal guidance in laterotrusion and jaw relation].

This study was an attempt to clarify the relationships between antero-posterior jaw relations and lateral excursive patterns. The age of the 538 patients studied ranged from 12 to 30 years. Although it was impossible to draw any general conclusions, some trends could be revealed: 1. The results suggest a relationship between angle class and the lateral excursive pattern. 2. Group-function occlusion was observed to occur twice as often in patients over 20 years of age than in younger persons, more often than not these had cuspid guidance. 3. The percentage of group-function occlusion increased in proportion with the degree of cuspid abrasion and the age of the patients.

Adolescent↗