ABSTRACT
This article presented a series of cases using vascularized interpositional periosteal-connective tissue ( VIP-CT) flap with guide bone regeneration ( GBR) in peri-implant soft and hard tissue reconstuction at the esthet-ic zone of maxillary. Fifteen cases with bone and soft tissue defects underwent VIP-CT flap with GBR in the implant treatment. And the attached gingiva width was evaluated before treatment and six months and eighteen months after the operation. The width of attached gingival of six months and eighteen months after surgery was significantly dif-ferent from the preoperative value (P<0. 05). However, no statistically significant difference could be found at six months and eighteen months postoperative. The application of VIP-CT flap could increase the width of attached gin-giva around implants and the short-term effects were stable and favorable.
ABSTRACT
Objective:To compare the outcomes of guide bone regeneration by calcined bovine bone and Bio-Oss graft material in alveolar ridge preservation after tooth extraction.Methods:280 patients were divided into two groups randomly.Each patient had single tooth extracted.The sockets were filled with calcined bovine bone in 140 patients and Bio-Oss graft in another 140 patients. After shaping,all the sockets were covered with Bio-Gide membrane.Buccal mucoperiosteal flap was released and sutured to close the alveolar sockets.The patients were regularly examined at the 1st,12th and 24th week after surgery.Physical examination and X-ray evaluation were applied to compare the outcomes of the two materials in alveolar ridge preservation.Results:No infection and re-jection occurred.The radiographic results showed the width and height of the alveolar bone were preserved well at the 12th and 24th weeks.No statistically difference was found in the two groups at the 1st and 24th weeks(P>0.05).Conclusion:The two graft ma-terials can effectively preserve alveolar bone after tooth extraction.
ABSTRACT
La regeneración ósea guiada (ROG) actualmente es considerada una terapia de gran importancia en Implantología para promover la regeneración de hueso en defectos óseos maxilares con la finalidad de crear un lecho adecuado para el posicionamiento de implantes. La ROG se basa en el uso de membranas reabsorbibles y no reabsorbibles en combinación con biomateriales de relleno como hueso autólogo, homólogo, heterólogo o materiales aloplásticos con funciones de barrera mecánica, tendientes a excluir de la zona de reparación células epiteliales y conjuntivas, permitiendo la invasión de células osteoprogenitoras. En este artículo se presenta el caso clínico de un paciente al que se le realizó aumento vertical y horizontal de cresta ósea alveolar mediante regeneración ósea guiada en asociación con la colocación de implantes oseointegrados.
Guide Bone Regeneration has been used widely in implantology for enhancing bone healing to optimize implant placements in the maxillary. The GBR is a technique that uses resorbable and non-resorbable membranes in combination with other filling biomaterials as autologous, homologous or heterologous bone graft, or aloplastic materials as mechanic barriers that prohibit the migration of connective and epithelial cells, enabling the osteogenic cells invasion in bone defects. In the present study a clinic case of vertical and horizontal augmentation of alveolar ridge with guided bone regeneration in association with dental implants was reported.
ABSTRACT
La regeneración ósea guiada (Guided Bone Regeneration- GBR) actualmente es considerada una terapia de gran importancia en Implantología, para promover la regeneración de hueso en defectos óseos maxilares; la finalidad es crear un lecho adecuado para el posicionamiento de Implantes. La GBR se basa en el uso de membranas reabsorbibles y no reabsorbibles en combinación con biomateriales de relleno como hueso autólogo, homólogo, heterólogo o materiales aloplásticos con funciones de barrera mecánica, tendientes a excluir de la zona de reparación células epiteliales y conjuntivas, permitiendo la invasión de células osteoprogenitoras
Guide Bone Regeneration has been used widely in implantology for enhancing bone healing to optimize implant placements in the maxillary. The GBR is a technique that uses resorbable and non-resorbable membranes in combination with other filling biomaterials as autologous, homologous or heterologous bone graft, or aloplastic materials as mechanic barriers that prohibit the migration of connective and epithelial cells, enabling the osteogenic cells invasion in bone defects
Subject(s)
Female , Bone Regeneration , Facial Bones/transplantation , DentistryABSTRACT
The purpose of this study was to investigate effect of enamel matrix derivative on guided bone regeneration with intramarrow penetration in rabbits. Eight adult male rabbits (mean BW 2Kg) were used in this study. Intramarrow penetration defects were surgically created with round carbide bur(HP long #6) on calvaria of rabbits. Defects were assigned to the control group grafted with mixture of the same quantity of demineralized freeze-dried bone allograft and deproteinized bovine bone mineral. Then, guided bone regeneration was carried out using resorbable membrane and suture. Enamel matrix derivative applied to defects was assigned to the test group. And treated as same manners as the control group. At 1, 2, 3 and 8 weeks after the surgery, animals were sacrificed, specimens were obtained and stained with Hematoxylin-Eosin for light microscopic evaluation. The results of this study were as follows: 1. At 1, 2 and 3 weeks, no differences were observed between the control group and the test group in the aspect of bone formation around bone graft. 2. Proliferation of blood capillary was faster in the test group than in the control group. 3. Bone regeneration in intramarrow penetration was faster in the test group than in the control group. 4. At 8 weeks, new osteoid tissue formation around bone graft was more prominent in the test group than in the control group. From the above results, enamel matrix derivative might be considered as the osteopromotion material and effective in the guided bone regeneration with intramarrow penetration.