RESUMEN
PURPOSE: To study the clinical effect of "gelatamp" colloidal silver gelatin sponge on preventing dry socket after extracting the mandibular impacted teeth. METHODS: 1350 teeth extracted from 976 patients who needed to extract the mandibular impacted teeth were divided into group A, group B and group C randomly. "Gelatamp" colloidal silver gelatin sponge was implanted into alveolar socket after teeth extraction in group A, with absorbable gelatin sponge was implanted into alveolar socket in group B and nothing was implanted into alveolar socket in group C. The incidence of dry socket was observed, the data was analyzed using SPSS10.0 software package. RESULTS: The incidence of dry socket was 0.44% in group A, 2% in group B and 4.44% in group C. There was significant difference in the incidence of dry socket between group A and group C(P<0.01). There was also significant difference between group B and group C(P<0.05) and between group A and group B(P<0.05). CONCLUSIONS: The results demonstrate that "gelatamp" colloidal silver gelatin sponge can prevent the occurrence of dry socket after teeth extraction, which is of wide clinical use.
Asunto(s)
Alveolo Seco , Diente Impactado , Animales , Gelatina , Humanos , Hidrogeles , Mandíbula , Tercer Molar , Poríferos , Distribución Aleatoria , Plata , Compuestos de Plata , Extracción DentalRESUMEN
PURPOSE: This study evaluated the biologic response to titanium mesh and autogenous particulate bone grafts for the reconstruction of segmental mandibular defects in a dog model. MATERIALS AND METHODS: Unilateral 40-mm critical-sized continuity defects of the mandible were made in five beagle dogs. Titanium mesh was shaped and fixed with titanium screws in the defects. Autogenous bone was harvested from the ablated mandible and iliac crest (the ratio of cortical bone:cancellous bone was 3:1) and used to fill the mesh. Two implants were placed into each bone graft. The animals were sacrificed after 6 months. Radiographs, histologic sections, scanning electron microscopy, and energy dispersive spectroscopy were performed to evaluate bone formation and osseointegration of the implants in the reconstructed mandibles. RESULTS: The outline of the reconstructed mandible was satisfactory, and no bone resorption was observed in the defect area. All implants showed excellent osseointegration of the grafted bone. Furthermore, the density of bone formed around the implants was higher than that seen in control samples (intact, ungrafted dog hemimandibles). CONCLUSIONS: Shaped titanium mesh with autogenous particulate bone graft is a predictable method for restoring critical-sized continuity defects of the mandible. Simultaneous implant placement is feasible and the structure of bone formed near implants may be optimal.
Asunto(s)
Materiales Biocompatibles/química , Trasplante Óseo/métodos , Enfermedades Mandibulares/cirugía , Procedimientos de Cirugía Plástica/métodos , Mallas Quirúrgicas , Titanio/química , Animales , Densidad Ósea/fisiología , Tornillos Óseos , Trasplante Óseo/diagnóstico por imagen , Implantación Dental Endoósea , Implantes Dentales , Modelos Animales de Enfermedad , Perros , Estudios de Factibilidad , Fluoresceínas , Colorantes Fluorescentes , Enfermedades Mandibulares/diagnóstico por imagen , Microscopía Confocal , Microscopía Electrónica de Rastreo , Oseointegración/fisiología , Osteogénesis/fisiología , Radiografía , Procedimientos de Cirugía Plástica/instrumentación , Espectrometría por Rayos X , Recolección de Tejidos y Órganos/métodos , Trasplante AutólogoRESUMEN
OBJECTIVE: To observe the healing and bone formation of the autogenous particulate bone graft and osseointegration of the implants in shaped titanium mesh with autogenous particulate bone graft and simultaneous implant for reconstructing segmental mandibular defect in dogs. METHODS: Five Beagle dogs were prepared with unilateral 40 mm segmental mandibular defect. Titanium mesh was shaped according to the mandibular defect and was fixed with titanium screws. The ablated mandibular bone and iliac bone were crashed to approximately 2 mm particulates which then filled the titanium mesh tightly (cortical bone:cancellous bone, 3:1). Two implants were placed in the autogenous particulate bone graft. The dogs were sacrificed after six months. X-ray films, histological sections, Scanning electron microscopy(SEM) and Energy disperse analysis of the reconstructed mandibles were examined to evaluate the bone formation of the bone graft and osseointegration of the implants. RESULTS: The outline of the reconstructed mandible was satisfactory and its function was excellent. The ossific fusion among the particulate bone grafts was fine and no resorption was found. All implants showed excellent osseointegration with the bone graft. The bone near the implant was more compact than the bone away from it. The structure of the bone near implant was optimized because of simultaneous implant in shaped titanium mesh. CONCLUSIONS: The shaped titanium mesh with autogenous particulate bone graft is a good method for reconstructing segmental mandibular defect, and simultaneous implant is feasible in the reconstructed mandible in dogs.