ABSTRACT
PURPOSE: The aim of this study was to compare marginal bone loss around early-loaded SLA and SLActive tissue-level implants (Straumann Dental Implants; Institut Straumann AG, Basel, Switzerland) after a mean of 81-month follow-up period. MATERIAL AND METHODS: One hundred seven SLA and 68 SLActive implants were placed in 55 patients and loaded with final restoration after 8 and 3 weeks of healing time, respectively. Marginal bone loss around implants was determined radiographically at initial and after a mean observation time ranging between 20 and 81 months. The effect of location (mandible vs maxilla), smoking habit, sex, implant length and diameter, and the type of prosthesis on the marginal bone loss was evaluated. RESULTS: The overall cumulative survival rate was 98.2% being 99% for SLA implants and 97% for SLActive implants. After 20-month follow-up period, mean marginal bone loss values for the SLA and SLActive implants were 0.24 and 0.17 mm, respectively. After 81 months, mean marginal bone loss for the SLA and SLActive implants reached 0.71 and 0.53 mm, respectively. Marginal bone loss was affected by the length and type of implant and patients' smoking habit after a mean observation time of 20 months. However, none of the parameters had any significant effect on the marginal bone loss after a follow-up period of 81 months. CONCLUSION: With both SLA and SLActive implants, successful clinical results could be achieved up to 6.5 years of follow-up period.
Subject(s)
Alveolar Bone Loss/etiology , Dental Implants , Dental Prosthesis Design , Acid Etching, Dental , Adult , Aged , Alveolar Bone Loss/diagnostic imaging , Dental Restoration Failure , Female , Follow-Up Studies , Humans , Hydrophobic and Hydrophilic Interactions , Male , Middle Aged , Osseointegration/physiology , Risk Factors , Surface Properties , Titanium , Treatment OutcomeABSTRACT
The aim of this study was to determine the age of becoming edentulous and make a comparison between the patients examined in 1987 and in 2007 at the Dental School, University of Marmara in Istanbul, Turkey. A total of 680 patients (336 in 1987 and 344 in 2007) visiting the Dental School were examined. Some of the patients had just their teeth drawn, or had already became edentulous before, and were sent to the Department of Prosthodontics, for prosthodontic treatment of their edentulous mandible or maxilla. Some of the patients have few teeth and they were extracted at the Department of Oral and Maxillofacial Surgery, they became edentulous. The age of the patients that they first become edentulous and begin to use complete denture was determined. The patients grouped according to their age, sex and being completely edentulous or edentulous in one jaw. Fisher's exact test was performed during the evaluation of quantitative data. Statistical significance level was established at p<0.05. Between 1987 and 2007, a more than 50% decrease was observed in the number of the patients who were completely edentulous or edentulous only in one jaw. This observation is one of the indications of development of patients' care and improvement in the state of mouth health in Turkey during the last 20 years.
