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Journal of Oral Science & Rehabilitation No. 4, 2017

P e r i i m p l a n t s o f t - t i s s u e a n d b o n e l e v e l s w i t h d i f f e r e n t i m p l a n t n e c k d e s i g n s Periimplant soft-tissue and bone levels around dental implants with different neck designs and neck surface treatments: A retrospective cohort study with 3-year follow-up Abstract O b j e c t i v e Natalia Ribes Lainez,a Alba Monreal Bello,a María Ángeles Fuster Torres,a David Peñarrocha Oltraa & Miguel Peñarrocha Diagoa a Stomatology Department, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain The objective of the study was to assess the influence of the implant neck designs and neck surface treatments on periimplant tissue health and radiographic bone loss after 3 years of functional loading of implants with the same body and prosthetic connection. C o r r e s p o n d i n g a u t h o r : Dr. David Peñarrocha Oltra Cirugía Bucal. Clínicas Odontológicas C/Gascó Oliag, 1 46021 Valencia Spain T +34 963 86 4144 david.penarrocha@uv.es H o w t o c i t e t h i s a r t i c l e : Ribes Lainez N, Monreal Bello A, Fuster Torres MA, Peñarrocha Oltra D, Peñarrocha Diago M. Periimplant soft-tissue and bone levels around dental implants with different neck designs and neck surface treatments: A retrospective cohort study with 3-year follow-up. J Oral Science Rehabilitation. 2017 Dec;3(4):16–23. M a t e r i a l s a n d m e t h o d s A retrospective cohort study was carried out in the Oral Surgery and Implantology Unit of the University of Valencia, Valencia, Spain. Patients treated with implants presenting a neck design without microthreads and a 1.5 mm machined surface and implants with a 0.7 mm machined surface and microthreads with a rough surface with a minimum of 3 years of follow-up were included. Probing pocket depth, bleeding on probing, presence of mucositis and width of keratinized mucosa were assessed 3 years after prosthesis placement. Marginal bone loss was measured in intraoral radiographs by calculating the difference between the mea- surements at the prosthesis placement and 3 years after loading. R e s u l t s The final sample consisted of 27 partially edentulous patients with a total of 51 dental implants. No significant differences were observed on eval- uating probing pocket depth (P = 0.195), bleeding on probing (P = 0.524), presence of mucositis (P = 0.916), width of keratinized mucosa (P = 0.435) and marginal bone loss (P = 0.217) between both groups. C o n c l u s i o n Within the limitations of the present investigation, implant neck designs and neck surface treatments were not significantly related to periimplant tissue health and radiographic bone loss after 3 years of follow-up. K e y w o r d s Periimplant hard tissue, periimplant soft tissue, radiology, CT imaging, clinical research, clinical trials. 16 Volume 3 | Issue 4/2017 Journal of Oral Science & Rehabilitation

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