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Evaluation of the Effect of Implant-numbers, Position and Complete Over Denture on Alveolar Bone Resorption

Authors: Ali M. AlSheakh --- Nadira A Hatim
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2011 Volume: 11 Issue: 3 Pages: 80-92
Publisher: Mosul University جامعة الموصل


The aims: The aims of this study were to evaluate the alveolar bone resorption every 2.5mm distal to the implant over denture to the retromolar pad in the mandibular arch, and to the maxillary tuberosity in the maxillary arch in edentulous patient according to number between two and four, and position of implants between canine and 2nd premolar. Materials and Methods: Eight patients (age range 45-60 years) were selected from the department of Prosthodontics/ College of Dentistry/Mosul University, who had at least one edentulous arch. All patients complaining from poorly retention conventional acrylic complete denture due to the residual ridge resoption, but the alveolar ridge height need at least 10mm implant length.After completing the surgical steps of 26 implants (two or four implant screw type titanium), over denture type with one step surgery for all implant types were constructed in conventional method after one month healing period. The prosthesis was delivered to the patients after one months of making the period elapsed. Dentures were delivered without socket attachment(six months). For assessment of alveolar bone height, for each patient panoramic exposure of OPG was recorded – three times [base line(at time of placement) , 6 months and 12 months]. Results: Results of this study showed, that mean difference of bone resoption range between [-0.2 –(-0.6)mm], and there was a significant difference of bone resoption between base line and 12 months to p0.05 according to number and position of implants. Conclusions: The conclusion of this study showed that, there was no significant different of alveolar ridge bone resoption between implants number in two or four implants over denture or implant position

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