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Journal of Oral Science & Rehabilitation No. 4, 2016

Journal of Oral Science & Rehabilitation 62 Volume 2 | Issue 4/2016 E f f e c t s o f i n s e r t i o n t o r q u e o n h a r d a n d s o f t t i s s u e a f t e r t w o y e a r s The clinical effects of insertion torque for implants placed in healed ridges: A two-year randomized controlled clinical trial Abstract O b j e c t i v e Several factors are involved in the achievement of implant primary sta- bility, such as the insertion torque, the implant’s macrogeometry, the surgical technique, and the bone quality and quantity. Implant primary stability is considered one of the key factors for osseointegration and is associated with insertion torque. Several studies have suggested that insertion torque values of 25–45 N cm could prevent micromovements that could impair the bone healing around the implants. The aim of the present randomized clinicaltrialwasto evaluate and comparethe clinical outcome for implants placed with a high insertion torque (50–100 N cm) and a regular insertion torque (within 50 N cm) in healed ridges aftertwo years. M a t e r i a l s a n d m e t h o d s Patients requiring implant therapy to replace missing teeth without the need for bone augmentation at the time of implant placement were se- lected for this study. All of the patients were divided according to a ran- domizationlistintotwogroups:highinsertiontorque(CTimplantsinsert- edwithinsertiontorque≥50Ncm)andregularinsertiontorque(Blossom CT implants with insertion torque < 50 N cm). The implants were left to heal submerged for three months and then restored with individualized abutments and cemented metal–ceramic crowns. Variables registered were insertion torque values, thickness of the buccal bone plate after implantosteotomypreparation,marginalbonelevelandfacialsoft-tissue level. All of the patients were followed for two years after implant place- ment, with recall visits at three, six, 12 and 24 months. R e s u l t s 116implantswereplaced:58implantswereallocatedtoeachgroup,with mean insertiontorque rangingfrom 20 N cmto 50 N cmforregularinser- Fortunato Alfonsi,a Valentina Borgia,b Luigi Barbato,a Paolo Tonelli,a Enrica Giammarinaro,c Simone Marconcini,c Stefano Romeggiob & Antonio Baroneb a Department of Surgery and Translational Medicine, University of Florence, Florence, Italy b School of Dental Medicine, University of Geneva, Geneva, Switzerland c Tuscan Stomatologic Institute, University of Pisa, Pisa, Italy C o r r e s p o n d i n g a u t h o r : Prof. Antonio Barone Centre Universitaire de Médecine Dentaire Rue Barthélémy-Menn 19 1205 Genève Switzerland T +41 22 379 4080 F +41 22 372 7604 barosurg@gmail.com H o w t o c i t e t h i s a r t i c l e : How to cite this article: Alfonsi F, Borgia V, Barbato L, Tonelli P, Giammarinaro E, Marconcini S, Romeggio S, Barone A. The clinical effects of insertion torque for implants placed in healed ridges: a two-year randomized controlled clinical trial. J Oral Science Rehabilitation. 2016 Dec;2(4):XX–X. Fortunato Alfonsi,a Valentina Borgia,b Luigi Barbato,a Paolo Tonelli,a Enrica Giammarinaro,c Simone Marconcini,c Stefano Romeggiob & Antonio Baroneb a Department of Surgery and Translational Medicine, University of Florence, Florence, Italy b School of Dental Medicine, University of Geneva, Geneva, Switzerland c Tuscan Stomatologic Institute, University of Pisa, Pisa, Italy C o r r e s p o n d i n g a u t h o r : Prof. Antonio Barone Centre Universitaire de Médecine Dentaire Rue Barthélémy-Menn 19 1205 Genève Switzerland T +41 22 379 4080 F +41 22 372 7604 barosurg@gmail.com H o w t o c i t e t h i s a r t i c l e : Alfonsi F, Borgia V, Barbato L, Tonelli P, Giammarinaro E, Marconcini S, Romeggio S, Barone A. The clinical effects of insertion torque for implants placed in healed ridges: a two-year randomized controlled clinical trial. J Oral Science Rehabilitation. 2016 Dec;2(4):62–73. T +41223794080 F +41223727604 T +41223794080 F +41223727604

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