Surgical management of impacted primary teeth: report of two cases.

AIM: Impaction of deciduous teeth is an uncommon event. The purpose of this report is to describe two unusual eruption failures of a second primary molar and their treatment management. CASE REPORT: The diagnostic and therapeutic protocol of two cases selected at the Unit of Paediatric Dentistry, Department of Oral and Maxillofacial Science, "Sapienza" University of Rome, Italy, are presented. In both cases, the second deciduous molar was impacted, while no mechanical obstacle like odontomas or supernumerary teeth were present. CONCLUSION: The two case reports presented in this work are of scientific relevance, due to the rarity of this type of pathology.

Langerhans cell histiocytosis: oral/periodontal involvement in adult patients.

OBJECTIVE: Langerhans cell histiocytosis (LCH) is a clonal proliferative multisystem disease. Although bone and mucosae have been classified as non-risk organs, their involvement may increase the risk of disease progression. Oral and periodontal lesions are burdened with a significant impairment of quality of life for associated signs, symptoms and loss of function. Most of information regards paediatric disease; the disease in adults has received limited attention. SUBJECTS AND METHODS: A total of 31 adult patients affected by immuno-histopathology confirmed LCH have been prospectively examined; attention was paid to the occurrence and characterization of oral lesions. RESULTS: Twelve patients developed oral lesions. Posterior regions of jawbones were always affected; the involvement of anterior regions was not constant. Unifocal oral involvement was significantly associated with multisystemic disease while multifocal lesions were associated with unisystemic disease. Oral disease presented with soft tissue ulcers (50% of cases), gingival bleeding (66.7%), pain (83.4%), periodontal damage (50%), tooth mobility (16.7%), non-healing extraction socket (8.3%); 41.6% of patients complained of negative outcomes on quality of life. Oral lesions were easily handled with local measures. CONCLUSIONS: Posterior regions require attention; single oral lesions may be part of multisystemic disease; oral and periodontal lesions may be early signs of disease reactivation.

Black stains in the mixed dentition: a PCR microbiological study of the etiopathogenic bacteria.

The aim of this work is to emphasize that particular stains on the third cervical of the buccal and lingual surfaces in mixed dentition, called "black stain." Previous research showed the microbiological etiology of this discoloration by chromogen bacterias. Our study shows bacteria spp involved in stains by means of PCR process and electrophoresis gel on the agarose medium. Sample was formed by 100 subject with black stain and 100 control subjects stain-free. A statistical analysis (SPSS 10.0) using X2 was performed in this study. Porphyromonas gingivalis and Prevotella melaninogenica, were not involved in both in black stain subjects and in the control. On the contrary, Actinomyces could be involved in the pigmentation process.

Surgical removal of a left lower third molar root after iatrogenic displacement in soft tissue. Case report.

Displacement of a tooth or a portion of it is an unusual but very serious event for the severe consequences it could have. Already Hill and Howe in the half of the past century understood and described the risks associated to this accident particularly frequent during impacted third lower molars avulsion. Displacements can be idiopathic or iatrogenic and the sites of displacements depend on the anatomy of the tooth and the surrounding region. After a complete review of the literature, the authors describe the surgical removal of a left lower third molar root displaced in the soft tissue after a first extraction of the entire tooth. The necessary precautions to limit the frequency of this accident are then discussed.