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Healing at implants placed in bone of different morphology: an experimental study in dogs
Author(s) -
Caroprese Marino,
Soldini Claudio,
Ricci Sara,
Rea Massimiliano,
Lang Niklaus P.,
Botticelli Daniele
Publication year - 2017
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.12905
Subject(s) - dentistry , morphology (biology) , medicine , bone healing , orthodontics , anatomy , biology , genetics
Abstract Objective To study osseointegration at implants installed using a standard bed preparation in sites of different bone morphology. Material and methods In six Labrador dogs, all mandibular premolars and first molars were extracted. After 4 months of healing, flaps were elevated, and two recipient sites were prepared in each side of the mandible, one in the second premolar and the other in the molar regions. Bone morphology and final insertion torque were evaluated. Healing abutments were applied, and the flaps were sutured to allow a non‐submerged healing. After 4 months, the animals were sacrificed and ground sections were obtained for histomorphometric analyses. Results At the premolar sites, bone morphology Class 2 and at the molar regions Class 3 or 4 were identified. The final insertion torque was 50–55 Ncm at the premolar and 30–35 Ncm at the molar sites. Mean osseointegration in percentage reached 61.5 ± 11.5% and 63.3 ± 10.1% at the premolar and molar sites, respectively. Mineralized bone density evaluated from the implant surface up to a distance of about 0.6 mm lateral to the implant surface was 63.0 ± 7.4% and 65.4 ± 17.7% at the premolar and molar sites, respectively. Conclusions Similar implant bed preparations performed at premolar and molar sites with different bone morphology, yielding insertion torque values of about 30–35 and 50–55 Ncm, respectively, did not affect osseointegration after 4 months at non‐submerged implants.