Secondary retention refers to cessation of tooth eruption after emergence. The aim of this study was to evaluate the clinical, radiographic, and histological characteristics of secondary retention as well as the treatment results in a group of thirty-four patients with seventy-seven secondarily retained primary molars. The most important clinical and radiographical criterion for diagnosing secondary retention was infraclusion. Percussion was not a reliable diagnostic tool. Secondary retention in the primary dentition may predispose to a similar disorder in the permanent dentition. In many cases, occlusal disturbances and underdevelopment of the alveolar process disappeared spontaneously after eruption of the permanent successor, unless a similar disorder was observed in the permanent dentition. Active therapy is necessary only in case of severe infraclusion, severe malocclusion, dislocation or agenesis of the successor.

Adolescent↗

PubMedDate not supplied

[Bioabsorbable poly(L-lactide) osteosynthesis plates and screws for the fixation of zygomatic bone fractures].

Ten unstable zygomatic bone fractures were treated with osteosynthesis plates and screws made of bioabsorbable poly(l-lactide) (PLLA). This study has shown that our PLLA plates and screws guarantee stable osteosynthesis of zygomatic bone fractures for an adequate period of time and allow undisturbed healing of the fracture. Bioabsorption takes more or less 18 months. Thus, a second operation for removal of the osteosynthesis material is avoided.

Biodegradation, Environmental↗

PubMedDate not supplied

[Peripheral giant cell granuloma: clinicopathological study and case report].

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Aged↗

PubMedDate not supplied

Psychosocial effects of implant-retained overdentures.

The aim of this study was to compare implant-retained mandibular overdentures and two conventional treatments for their effects on functional ability (chewing, speaking, etc), patient satisfaction, and quality of life (psychosocial functioning). Assignment of 90 patients was executed by means of a balancing allocation computer program to ensure the pretreatment comparability of the three groups. Twelve months after treatment, the average scores for almost all specific quality-of-life measures had improved significantly in all three groups. On average, all patients experienced fewer restrictions in their social activities and had fewer psychological problems because of their full dentures. No impact on the general quality of life was established. One year after treatment, all three dental treatment modalities had a comparably positive effect on dental health-related quality of life.

Analysis of Variance↗