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PubMedDate not supplied

[Vertical pathological attrition--causes, consequences and treatment methods].

The mechanism of development of vertical pathological attrition leading to destruction of the palatine and vestibular surfaces of the anterior teeth is described. Vertical pathological attrition is most frequent in acquired occlusal defects after loss of abutement zones, and in certain congenital malocclusions (supraocclusion). This condition may lead to damage to the whole stomatognathic system. Depending on the degree of progression of the pathological changes of this system prosthetic treatment in cases of vertical pathological attrition may be done in one or two steps. For illustration of the methods of treatment of this attrition three cases are presented.

Denture, Partial↗
PubMed1998

Evaluation of the clinical performance and effectiveness of adhesively-bonded metal crowns on damaged canine teeth of working dogs over a two- to 52-month period.

In this clinical study, 41 metal full crown restorations of canine teeth were placed in 18 working dogs. Twenty-six canine teeth had severe attrition with no involvement of the pulp cavities; 15 fractured canine teeth were endodontically treated. With the exception of one tooth, at least one-third of the coronal part of each canine tooth was available for a supragingivally performed, minimal tooth crown preparation. A dental resin luting cement technique was used to bond the electrolytically etched crown (made from an alloy of cobalt-chrome-molybdenum) to the tooth. The metal crowns were slightly shorter and with a more rounded tip than the original tooth. Posts or post-and-core techniques were not used. Median follow-up period was 30 months (range 2 to 61 months), at which time 36 crowns were found to be intact and functional. Five crowns were lost; three as a result of subsequent injury and fracture of the tooth below the crown; one as a result of use of less than one-third of the coronal portion of the tooth for retention of the crown; and one as a result of an oblique fracture of the root.

Animals↗
PubMed2002

Early detection of dens evaginatus appearing on the premolars and clinical management: histological study.

A review of the methods for the prevention of central cusp fracture is presented, with a case of central cusp protection of a premolar by self-curing acrylic resin by early detection. The anomalous tooth was extracted for histological observation. Closure of the pulpal horn, could be accomplished by early detection and adequate treatment for the central cusp fracture of premolars. In this case, if the gradual attrition of a central cusp were not possible, a protecting the cusp using a self-curing acrylic resin would be an effective form of treatment.

Acrylic Resins↗
PubMed1990

Studies on the temporomandibular joints of an eighteenth-century London population (Spitalfields).

The mandibular condyles and glenoid fossae of 93 adult skulls of known age at death were studied in skeletons exhumed from the crypt of Christ Church, Spitalfields, London. Antero-posterior and mesio-lateral dimensions were recorded, as were the shapes together with form and surface changes. In addition, the teeth present and the extent of occlusal attrition were noted. There was sexual dimorphism in the mesio-lateral size of the condyle, and although ante-mortem tooth loss was higher than in previously studied Romano-British skulls, form and surface changes of the condyle were less marked. It is concluded that tooth loss is not the main factor involved in remodelling of the condyle.

Adolescent↗
PubMed1997

Clinical study of dens evaginatus cases with pulpal involvement.

The objective of the present study was to investigate the incidence, clinical findings, diagnosis and treatment of evaginated teeth with pulpal involvement. Five hundred and three cases requiring endodontically treated premolars were studied at Kaohsiung Medical College Hospital. We observed 23 (4.6%) evaginated teeth with pulpal involvement out of the 503 samples studied here. Of the 23 teeth, mandibular second premolars comprise the largest portion. Clinically, all tubercles of pulpally involved evaginated teeth had been worn down by attrition and all these teeth showed negative response in vitality tests. The study indicated that 17 cases had sinus tracts, 1 tooth had discoloration in crown portion, 1 case had facial asymmetry and 6 teeth had a painful history. Radiographs confirmed that 21 cases had apical or lateral rarefaction, 1 tooth had thickened periodontal ligament and 8 teeth had incomplete root formation. Clinical diagnosis included pulp necrosis (23 cases), acute apical periodontitis (3 cases), chronic apical periodontitis (4 cases), suppurative apical periodontitis (17 cases)and Garrer' osteomyelitis (1 case). After the treatment, 13 teeth showed satisfactory results. The treatment on 2 teeth was failed, 1 tooth had root fracture and 7 teeth had loss of follow-up. We conclude that the evaginated teeth can hence be preserved even if they are pulplly infected and have an incomplete root apex.

Adolescent↗