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The edentulous ridge expansion ( ERE ) technique an experimental study in the dog
Author(s) -
Beolchini Marco,
Lang Niklaus P.,
Viganò Paolo,
Bengazi Franco,
Triana Barbara G.,
Botticelli Daniele
Publication year - 2014
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.12263
Subject(s) - maxilla , implant , dentistry , coronal plane , crest , osseointegration , buccal administration , ridge , resorption , alveolar ridge , alveolar crest , medicine , orthodontics , dental alveolus , anatomy , geology , surgery , paleontology , physics , pathology , quantum mechanics
Objective To compare the healing and bony crest resorption at implants installed conventionally or applying an edentulous ridge expansion ( ERE ) technique in the maxilla. Material and methods In six L abrador dogs, the first and second maxillary incisors were extracted bilaterally. In the left side of the maxilla (Test), the flaps were elevated and the buccal plate of the alveoli and septa was removed. After 3 months of healing, partial‐thickness (split) flaps were dissected and the residual alveolar bone was exposed. In the right side of the maxilla, an implant was installed conventionally (Type IV; Control) while, in the left side, the ERE technique was adopted. Hence, an expansion of the buccal bony crest was obtained, and the implant was subsequently installed (Test). After 3 months of healing, biopsies were obtained and ground sections were prepared for histological analyses. Results A buccal vertical resorption of the bony crest of 2.2 ± 1.2 mm and 1.6 ± 0.7 mm was found at the test and control sites, respectively. The difference, however, did not reach statistical significance. The coronal level of osseointegration at the buccal aspect was located at 3.1 ± 1.0 mm and 2.2 ± 0.7 mm from the implant shoulder at the test and control sites, respectively, the difference being statistically significant. The mean values of the mineralized bone‐to‐implant contact ( MBIC %) ranged from 43% to 48% at the buccal and lingual sites. No differences reached statistical significance. Conclusions Implants installed by applying an ERE technique may osseointegrate similarly to conventional implant installation. However, vertical and horizontal resorption of the displaced buccal bony wall occurred as well.