RESUMO
OBJECTIVE: To evaluate 2 iliac corticocancellous-block grafting techniques for dental implant placement in residual alveolar clefts. DESIGN: Nonrandomized prospective clinical trial between March 2010 and December 2014. SETTING: National Hospital of Odonto-Stomatology, Hanoi, Vietnam. PARTICIPANTS: Thirty-two patients (23 female, 9 male; mean age, 21.28 years; range, 16-31 years) with unilateral complete alveolar cleft after reconstructive surgery for cleft lip and palate (CLP). INTERVENTIONS: Harvested iliac crest bone was cut into 2 corticocancellous blocks. The smaller block was adapted against the sutured nasal mucoperiosteum and overlaid with cancellous bone; the larger one overlapped the labial cleft margin and was fixed with screws. Endosteal dental implants were placed after 4 to 6 months, and final restorations were delivered 6 months later. MAIN OUTCOME MEASURES: Flap statuses were assessed clinically. Bone formation was assessed using the Enemark scale. Cone-beam computed tomography was used for graft height and width measurements. Implant health was assessed by the Misch criteria. RESULTS: The mean postgrafting follow-up period was 36.7 ± 10.4 (range, 18-53) months. Three patients (9.4%) showed flap dehiscence but no infection 7 days after bone grafting. Twenty-nine patients (90.6%) had 75% to 100% bone fill (Enemark score of 1). The mean graft height and width were 11.4 ± 2.4 and 6.1 ± 1.0 mm, respectively. Sufficient bone for implant placement was noted in 29 patients (90.6%); the others required partially fixed prostheses. All implants functioned for at least 18 months. CONCLUSION: The proposed technique is reliable to reconstruct the alveolar cleft for implant placement in CLP patients.
Assuntos
Aumento do Rebordo Alveolar/métodos , Transplante Ósseo/métodos , Fenda Labial/cirurgia , Fissura Palatina/cirurgia , Implantação Dentária Endóssea/métodos , Implantes Dentários , Ílio/transplante , Procedimentos Cirúrgicos Pré-Protéticos Bucais/métodos , Procedimentos de Cirurgia Plástica/métodos , Adolescente , Adulto , Parafusos Ósseos , Tomografia Computadorizada de Feixe Cônico , Feminino , Humanos , Masculino , Osteogênese , Estudos Prospectivos , Retalhos Cirúrgicos , Técnicas de Sutura , Resultado do Tratamento , VietnãRESUMO
Fluoride has been used to prevent dental caries for children and community since 1945. In Vietnam, there are over 4 millions children who are using fluoride topically in schools across the nation. Conducting children to rinse their mouth by fluoride water has became one of the interventions of school dental program for over past 20 years. So it is necessary to determine the fluoride absorbability into tooth enamel in order to assess its anti-caries ability indirectly. This study was carried out to assess the ability of fluoride for caries prevention when using topically. Tooth enamels after treated in pH cycling with conditions as in the oral cavity were analyzed to determine the fluoride concentration. The results showed that significant of fluoride was absorbed into tooth enamel. It was al so suggested that fluoride that are provided by the School Dental Program has ability in prevention from dental carries.
RESUMO
This study was carried out to determine the fluoride concentration in tea water, natural water as well as the optimum of fluoride concentration in drinking water. Tea water was found to contain high concentration of fluoride. The fluoride concentrations in tea water range from 1.35 to 4.00 ppmF. These levels are 2-5 times higher than the optimum of fluoride concentration. Population in the North has habit of drinking tea water, so the source of fluoride in tea should be considered when determining total fluoride intake.
