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International Journal of Periodontics & Restorative Dentistry
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Int J Periodontics Restorative Dent 36 (2016), No. 6     14. Oct. 2016
Int J Periodontics Restorative Dent 36 (2016), No. 6  (14.10.2016)

Page 791-795, doi:10.11607/prd.3026, PubMed:27740639


Assessment of Marginal Peri-implant Bone-Level Short-Length Implants Compared with Standard Implants Supporting Single Crowns in a Controlled Clinical Trial: 12-Month Follow-up
Mendoza-Azpur, Gerardo / Lau, Miguel / Valdivia, Erick / Rojas, Jorge / Muñoz, Henry / Nevins, Myron
In oral rehabilitation, crown-to-root ratio is accepted as an indicator of bone loss, and this concept was transferred to implants. Recent studies have indicated that there is no significant difference between short and standard implants. The aim of this study was to compare marginal bone level alteration through radiographic evaluation and clinical parameters between short and standard implants supporting single crowns. This prospective clinical trial study included 82 systemically healthy, nonsmoking subjects. Patients were divided into two groups: one group for short dental implants measuring 5.5 or 7 mm, and one group for standard dental implants measuring 10 or 12 mm, in accordance with the individual needs of the patient. A clinical dental history was taken for each subject, including model casts, dental radiography, and cone beam computed tomography. A periapical analysis was also performed using ImageJ computer software to establish the initial bone measurement and periapical bone loss. A statistically significant difference was found in favor of the standard-length implants after 12 months, with greater gingival recession around the implant; however, bone loss in the short implants did not exceed 0.53 mm. The treatment with 5.5- to 7-mm-length implants is as reliable as treatment with 10- or 12-mm implants. Peri-implant bone loss is minimal, and therefore use of short implants can be recommended as treatment for the restoration of partially edentulous patients without the need for splinted crowns.