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Radiological comparison of laser‐microtextured and platform‐switched implants in thin mucosal biotype
Author(s) -
Linkevicius Tomas,
Puisys Algirdas,
Svediene Olga,
Linkevicius Rokas,
Linkeviciene Laura
Publication year - 2015
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/clr.12544
Subject(s) - dentistry , medicine , implant , radiography , orthodontics , surgery
Objective To compare how laser‐microtextured implants and implants with platform switching maintain crestal bone stability in thin peri‐implant tissues. Material and methods Thirty laser‐microtextured implants of 4.6 mm diameter ( T apered I nternal L aser‐ L ok, B io H orizons, B irmingham, AL , USA ; G roup 1) and 30 implants with platform switching of 5/4 mm diameter ( C ertain P revail; B iomet/3i, P alm B each G ardens, FL , USA ; G roup 2) were placed in 30 patients (12 males and 18 females, mean age 42.3 ± 2.4) with thin mucosal tissues (≤2 mm). Implants were placed in posterior mandible in one‐stage approach and after integration were restored with screw‐retained metal‐ceramic restorations. Radiographic examination was performed after implant placement, 2 months after healing, at prosthetic restoration delivery and after 1‐year follow‐up. Mean crestal bone loss was calculated, M ann– W hitney U ‐test was applied, and significance was set to 0.05. Results After 2 months of healing, the crestal bone loss was 0.71 ± 0.25 mm SD (range, 0.25–1.6 mm) and 1.02 ± 0.25 mm SD (range, 0.6–1.55 mm) in groups 1 and 2, respectively ( P = 0.001). At restorations' delivery, the crestal bone loss was 1.10 ± 0.30 mm SD (range, 0.65–1.85 mm) and 1.37 ± 0.27 mm SD (range, 0.90–1.80 mm) in groups 1 and 2, respectively ( P = 0.001). After 1‐year follow‐up, the crestal bone loss was 1.41 ± 0.42 mm SD (range, +0.1–2.30 mm) and 1.43 ± 0.23 mm SD (range, 1–1.80 mm) in groups 1 and 2, respectively ( P = 0.976). Conclusions Laser‐microtexturing of implant collar or platform‐switched implant/abutment connection did not eliminate crestal bone loss, if at the time of implant placement vertical soft tissue thickness was ≤2 mm. However, laser‐microtextured implants may present less proximal bone loss than platform‐switching implants in the period before implant loading.