[Prevalence of oro-dental injuries in wrestling in Senegal]. / Prévalence des traumatismes bucco-dentaires dans la lutte avec frappe au Sénégal.

Wrestling is a sport that is deeply-rooted in Senegalese cultural values. It is a popular sport that comes from local traditions but that has been influenced by boxing. This influence has made wrestling evolve to include the practice of boxing without gloves. Howeve, this practice causes many traumas in the mouth and teeth. The general objective of this study is to determine the frequency of the traumas among wrestlers who practice this form of wrestling associated with boxing. The specific objectives are to appreciate the bucco-dental conditions of the wrestlers, to evaluate the frequency and nature of the traumas in the intention to make recommendations and offer perspectives. 63.2% of wrestlers have at least presented a buckle or dental trauma. 28.8% of bucco-dental traumas occur among young wrestlers between 25 and 30 years and, 22.4% relate to the group between 19 and 24 years. 24.8% of bucco-dental traumas occur among wrestlers of the first category, followed by these of the second category with 21.6%, the fourth category with the lowest rate, 4% being last. It has been noted that 60% of buck-dental traumas occur in championship matches. 77.2% of dental and bucco traumas affect the upper jaw while. 22.8% affect the lower jaw. Affect teeth are often the group incisivo-canin. The National committee for the Management of wrestling in Senegal should make mandation the wearing of adapted gloves to attenuate the impact of blows. The Committee could also ban the inclusion of boxing practices in traditional wrestling and make compulsory the wearing of teeth protect in devices to minimize cases of bucco-dental traumas.

[Changes in oral mucosa of the partially edentulous who wear removable partial dentures ]. / Modification des muqueuses des cretes edentees dues au port de la prothese adjointe partielle en resine.

PURPOSE: to confirm or infirm structural modification of oral mycosis at the summit after fifteen days of wearing removable resin partial dentures. METHODS: our study took place at the health center of Rufisque in Senegal from January to July 1998, involved fourteen patients divided into two groups according to sex: seven males and seven females who came for removable resin partial dentures. The macroscopic examination was conducted through to inspection and touching of mycosis at the level of toothless summit before the wearing of the denture. A biopsy was conducted on each patient before and after the wearing of the resin dentures. Tissue reaction was appreciated qualitatively through morphological analysis. RESULTS: Before the wearing of the removable resin partial dentures 92.9% of patients had epithelial hyperplasia; 7.1% epithelial hypoplasia and 85.7% keratosis at the level of the chorion the number of collagen fibbers (28.6% discrete, 50% moderate, 21.4% important), fibroblasts (35.7% discrete; 42.9% moderate ; 21.4% important), inflammatory cells (71.4% discrete; 28.6% moderate; 0% important) and for blood vessels (64% discrete; 35.70% moderate; 0% important) after fifteen days of wearing partial denture. After fifteen days of the wearing removable resin partial dentures: 85.7% of patients had epithelial hyperplasia; 14.3% normal epithelial and 100% de keratosis at the level of the chorion the number of collagen fibbers (14.3% discrete; 21.4% moderate; 64.3% important), fibroblasts (42.9% discrete; 42.90% moderate; 14.3% important), inflammatory cells (50% discrete, 35.7% moderate: 14.3% important), blood vessels (43% discrete; 28.6% moderate; 28.6% important). CONCLUSION: Biopsies of the summit are reliable contribution; they provide precise information on the quality of tissue supporting resin partial dentures. This tissues may seem healthy appearance (inspection and touching) but show sign of suffering at this anatomy-pathological examination.

[Performance and Compatibility of Self Polymerizing Prime and Bond NT Adhesive and the Composite LuxaCore]. / Performances et compatibilite de l'adhesif prime & bond nt auto polymerisable et du composite LuxaCore a traitement dual.

AIM: To evaluate the performance of bond strength and the compatibility of Prime &Bond NT self etching adhesive resins without activator on dentin surface with dual composite resin LuxaCore, and verify the contribution of a coactivator. MATERIAL AND METHODS: twenty-four human teeth without decay, molars or pre-molar are used. The dental crowning is cut with diamond disc mounted on a hand piece; the roof surface is flattened and well humidified. Each tooth is embedded in cold self-etching resin (Plexil Excil). Samples are divided into two groups of 12. in the first group, self-etching Prime &Bond NT resin adhesive without activator is supplied on the flat mesial dentin roots, then dual cure composite resin LuxaCore) is bonded. The second group was subject to the same treatment but with addition of co-activator the Prime &Bond NT self-etching adhesive resin. Debonding was achieved with Universal testing machine and mean shear bond strengths were determined for each test group. The data were subjected to ANOVA (p < 0001). RESULT: Bond strength obtained with self-etching Prime &Bond NT without activator is 10.635 MPa. With addition of activator it is 15.185 MPa CONCLUSION: supplementing with an activator has significantly improved bonding strength.