ABSTRACT
BACKGROUND: Perforations of the cortical bone may be an advantage for the success of the autogenous bone graft procedure, but whether this perforation has a positive effect on the bone remains controversial. PURPOSE: This study evaluates the effects of cortical perforation of the autogenous bone block graft radiologically and histologically. MATERIALS AND METHODS: Seven adult pigs were used for this study. On the experimental side, cortical perforation at the host site was prepared, while no perforation was done on the control side. The specimens were evaluated, and the Wilcoxon signed-rank test was used for statistical analysis. RESULTS: In the radiological evaluation, the Wilcoxon signed-rank test indicated no significant differences in densities among the grafts (p = .23) with a mean of 4.29 ± 0.951 for the unperforated graft side and 3.57 ± 0.976 for the decorticated graft side. In histological evaluation, there was a significant difference in the thickness of the grafts between the groups (experimental group 3.71 ± 1.286, control group: 4.71 ± 0.488; p = .033). However, when the remodeling and osteoblastic activity in the grafts were measured, no significant differences were observed between the groups (p = 1 and p = .133, respectively). CONCLUSION: In augmentation with mandibular onlay bone grafts, cortical perforations in the recipient site make no distinct contribution to bone healing within 12 weeks.
Subject(s)
Bone Transplantation/methods , Inlays , Mandible/surgery , Wound Healing/physiology , Animals , Bone Density , Bone Regeneration , Bone Remodeling , Bone Resorption , Mandible/diagnostic imaging , SwineABSTRACT
PURPOSE: The sinus lift procedure provides a way to increase the amount of available bone and the placement of longer implants. The aim of this study was to evaluate and compare the survival rates of implants inserted in the posterior maxilla (without sinus lift) to simultaneous implant insertion with sinus lift. PATIENTS AND METHODS: Seventy maxillary sinuses in 62 patients were augmented by beta-tricalcium phosphate and 121 implants were inserted into these augmented sinuses (study group) and 136 implants were inserted in the posterior maxilla in 65 patients (control group). Follow-up times were 29.8 and 32.3 months for the study and control groups, respectively. RESULTS: One implant in the study group and 1 implant in the control group failed. All other implants in both groups were functioning well without any significant clinical finding. Implant survivals were 99.17% in the study group and 99.26% in the control group. CONCLUSION: Simultaneous implant insertion and sinus lift with beta-tricalcium phosphate is a safe surgical procedure, and survival rates of implants inserted in the augmented sinus were similar to those of implants inserted in the posterior maxilla without sinus lift.
Subject(s)
Alveolar Ridge Augmentation/methods , Bone Substitutes/therapeutic use , Calcium Phosphates/therapeutic use , Dental Implantation, Endosseous/methods , Maxillary Sinus/surgery , Oral Surgical Procedures, Preprosthetic/methods , Adult , Aged , Biocompatible Materials/therapeutic use , Dental Implants , Female , Follow-Up Studies , Humans , Jaw, Edentulous/rehabilitation , Jaw, Edentulous/surgery , Male , Maxilla/surgery , Middle Aged , Osteotomy/methods , Survival Rate , Treatment OutcomeABSTRACT
The aim of this study was to define the techniques and compare the complications and implant survival rates in localized alveolar deficiencies reconstructed by alveolar distraction osteogenesis (ADO) or autogenous onlay bone grafting (ABG). Thirty-six patients were treated with ADO or ABG harvested from the mandibular ramus. Twenty-four distractions in 22 patients (ADO group) and 18 ramus grafts in 14 patients (ABG group) were performed. Complications and implant survival rates were evaluated. The overall complication rates were 66.8% and 38.8% in the ADO and the ABG groups, respectively. Implant survival rates were 91.4% and 93.7% in the ADO and the ABG groups, respectively. The complication rate was higher in the ADO group, but the complications were mainly minor, and management was easier in this group than in the ABG group. Although follow-up was shorter, the implant survival rate was slightly higher in the ABG group compared with ADO group.
Subject(s)
Alveolar Ridge Augmentation/methods , Bone Transplantation , Dental Implantation, Endosseous , Osteogenesis, Distraction/methods , Postoperative Complications , Dental Restoration Failure , HumansABSTRACT
OBJECTIVE: The aim of the present study was to demonstrate if articaine HCl could provide palatal anesthesia in maxillary tooth removal without the need for a second palatal injection. STUDY DESIGN: Of 53 patients, 23 had bilateral and 30 had unilateral extractions. In the study group 2 mL of 4% articaine/HCl with 1:100,000 epinephrine was injected into the buccal vestibule of the tooth. After 5 min the extraction was performed. 27 subjects were controls and subjected to the same protocol with palatal injection. All patients completed a Faces Pain Scale (FPS) and a 100-mm Visual Analogue Scale (VAS) after extraction. RESULTS: According to VAS and FPS scores, when permanent maxillary tooth removal with palatal injection (97.5%) and without palatal injection (96.8%) were compared the difference was not statistically significant (P > .05) [corrected]. CONCLUSION: Permanent removal of maxillary teeth without palatal injection is possible by depositing 2 mL articaine/HCl to the buccal vestibule of the tooth.
