[The extrosseous/peripheral ameloblastoma in the aesthetic area of the maxilla: a presentation of a possible approach aiming an aesthetic satisfying rehabilitation. a case report]

Extraosseous/peripheral Ameloblastoma (EPA) is a rare, benign odontogenic soft tissue tumour with the same histological characteristics as the more common intraosseous subtypes. The EPA appears in the soft tissue of the gingiva and the mucosa of the alveolar process often as unspecified painless swelling. The present case report describes an EPA in the aesthetic area of the left anterior maxilla. Based on the clinical finding the suspected diagnosis of a gingival cyst was made. Firstly, this case should highlight the importance of a proper histopathologic evaluation whenever a biopsy is performed. Furthermore, this report should illustrate a step-by-step procedure from the surgical re-excision of the EPA with a safetymargin to the healing phase to the aesthetic satisfying rehabilitation by using periodontal plastic surgery.

[Spontaneous reeruption after intrusive luxation of the permanent incisors by incomplete root formation. Two case reports (in German)]

In the context of tooth trauma mostly the maxillary central front teeth are involved, whereby their roots are in some cases in developing stage (immature). The intrusive luxation represents one of the most severe types of dental trauma because of the damage to the periodontal ligament, alveolar bone and pulp. Principally, three different treatment options are available: 1. Spontaneous reeruption, 2. orthodontic extrusion, 3. surgical repositioning. This report is aiming to illustrate, by two cases, that traumatic intruded teeth with incomplete root formation, treated without active repositioning (waiting for spontaneous reeruption), seem to be associated with the lowest risk of healing complications. Therefore, the decision of the treatment procedure should be based mainly on the stage of root development and only secondarily on the degree of intrusion.

Risk factors associated with the longevity of multi-rooted teeth. Long-term outcomes after active and supportive periodontal therapy

AIM

To investigate risk factors for the loss of multi-rooted teeth (MRT) in subjects treated for periodontitis and enrolled in supportive periodontal therapy (SPT).

MATERIAL AND METHODS

A total of 172 subjects were examined before (T0) and after active periodontal therapy (APT)(T1) and following a mean of 11.5 ± 5.2 (SD) years of SPT (T2). The association of risk factors with loss of MRT was analysed with multilevel logistic regression. The tooth was the unit of analysis.

RESULTS

Furcation involvement (FI) = 1 before APT was not a risk factor for tooth loss compared with FI = 0 (p = 0.37). Between T0 and T2, MRT with FI = 2 (OR: 2.92, 95% CI: 1.68, 5.06, p = 0.0001) and FI = 3 (OR: 6.85, 95% CI: 3.40, 13.83, p < 0.0001) were at a significantly higher risk to be lost compared with those with FI = 0. During SPT, smokers lost significantly more MRT compared with non-smokers (OR: 2.37, 95% CI: 1.05, 5.35, p = 0.04). Non-smoking and compliant subjects with FI = 0/1 at T1 lost significantly less MRT during SPT compared with non-compliant smokers with FI = 2 (OR: 10.11, 95% CI: 2.91, 35.11, p < 0.0001) and FI = 3 (OR: 17.18, 95% CI: 4.98, 59.28, p < 0.0001) respectively.

CONCLUSIONS

FI = 1 was not a risk factor for tooth loss compared with FI = 0. FI = 2/3, smoking and lack of compliance with regular SPT represented risk factors for the loss of MRT in subjects treated for periodontitis.