ABSTRACT
The purpose of this study was to investigate the effects of immediate non-functional loading by analyzing histomorphology around the implant tissues in dogs. Five eight- to nine-month-old full-grown dogs weighing around 12 kg were used in the study. Group I (control group) comprised those in which delayed loading was applied to the right side of the mandible, and Group II (experimental group) consisted of dogs in which immediate loading was performed on the left side of the mandible. Resorbable blast media (RBM)-treated double-threaded US III implants measuring 3.5 mm in diameter and 11 mm long were used in the study. Each animal received four implants in each group, for a total of 40 implants. Cemented type abutments were used after implantation. An 8-week period was allowed for bone healing and an abutment was placed after exposing the periosteum for loading. An implant sample was obtained from bone blocks taken when the dogs were killed at 16 weeks after loading. A Mann-Whitney U-test was performed to evaluate statistical significance. Student's t-test was used for the histological evaluation. The bone formation ratio in Groups 1 and 2 was 88.23 and 86.41%, respectively. No significant difference in new bone formation was observed in the two groups. As no significant difference was seen in new bone formation between the delayed and immediate loading groups, early loading might be possible after implant placement.
Subject(s)
Animals , Dogs , Mandible , Osteogenesis , PeriosteumABSTRACT
Subject(s)
Female , Humans , Curettage , Facial Asymmetry , Fibroma, Ossifying , Mandible , Maxilla , Maxillary SinusABSTRACT
The purpose of the present study lied in examining the incidence, treatment and failure causes of peri-implantitis by analyzing medical charts of those patients who underwent implant placement for the past 2 years. The subjects included those patients who underwent implant placement at the present hospital from January 2001 to December 2002. 3i implants were used for the analysis for the comparison of significance. A total of 301 patients were examined, among whom 102 were females and 199, males. Implants were placed in a total of 578 cases. The number of peri-implantitis was present in a total of 29 cases (21 males and 8 females), giving the incidence at 9.6%. The evidence of peri-implantitis was seen in 60 cases, which was in 10.4% of the patients. Among those cases with peri-implantitis, 28 cases (47%) underwent bone graft and 22 cases (43%) underwent maxillary sinus lift. Furthermore, 4 of these patients had systemic diseases such as diabetes or hypertension. Regular management is important for the preven ion of peri-implantitis. In other words, early prevention through regular follow-ups to check the status of surrounding soft tissue would be needed to maintain implants.
Subject(s)
Female , Humans , Male , Hypertension , Incidence , Maxillary Sinus , Peri-Implantitis , Retrospective Studies , TransplantsABSTRACT
Subject(s)
Humans , Cicatrix , Facial Nerve , Moths , Operative Time , Orbit , Osteotomy , Physical Examination , ZygomaABSTRACT
Subject(s)
Child , Humans , Anacardium , Capsaicin , Carcinogens , Chronic Disease , Cicatrix , Esophagus , Fibrosis , Follow-Up Studies , Genetic Predisposition to Disease , Hypersensitivity , Immunologic Factors , Iron , Mouth Mucosa , Mouth , Mucous Membrane , Pharynx , Precancerous Conditions , Skin , Thigh , Vitamin B ComplexABSTRACT
Subject(s)
Centrifugation , Platelet-Derived Growth Factor , Platelet-Rich Plasma , Retrospective Studies , Transforming Growth Factor beta , TransplantsABSTRACT