Influence of lateral pressure to the implant bed on osseointegration: an experimental study in dogs


Autoria(s): PANTANI, Fabio; BOTTICELLI, Daniele; GARCIA JR., Idelmo Rangel; SALATA, Luiz Antonio; BORGES, Germana Jayme; LANG, Niklaus P.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

19/10/2012

19/10/2012

2010

Resumo

Aim To study osseointegration and bone-level changes at implants installed using either a standard or a reduced diameter bur for implant bed preparation. Material and methods In six Labrador dogs, the first and second premolars were extracted bilaterally. Subsequently, mesial roots of the first molars were endodontically treated and distal roots, including the corresponding part of the crown, were extracted. After 3 months of healing, flaps were elevated and recipient sites were prepared in all experimental sites. The control site was prepared using a standard procedure, while the test site was prepared using a drill with a 0.2 mm reduced diameter than the standard one used in the contra-lateral side. After 4 months of healing, the animals were euthanized and biopsies were obtained for histological processing and evaluation. Results With the exception of one implant that was lost, all implants were integrated in mineralized bone. The alveolar crest underwent resorption at control as well as at test sites (buccal aspect similar to 1 mm). The most coronal contact of bone-to-implant was located between 1.2 and 1.6 mm at the test and between 1.3 and 1.7 mm at the control sites. Bone-to-implant contact percentage was between 49% and 67%. No statistically significant differences were found for any of the outcome variables. Conclusions After 4 months of healing, lateral pressure to the implant bed as reflected by higher insertion torques (36 vs. 15 N cm in the premolar and 19 vs. 7 N cm in the molar regions) did not affect the bone-to-implant contact. To cite this article:Pantani F, Botticelli D, Garcia IR Jr., Salata LA, Borges GJ, Lang NP. Influence of lateral pressure to the implant bed on osseointegration: an experimental study in dogs.Clin. Oral Impl. Res. 21, 2010; 1264-1270.doi: 10.1111/j.1600-0501.2009.01941.x.

Sweden Martina SRL

ARDEC, Ariminum Odontologica SRL, Rimini, Italy

Identificador

CLINICAL ORAL IMPLANTS RESEARCH, v.21, n.11, p.1264-1270, 2010

0905-7161

http://producao.usp.br/handle/BDPI/26420

10.1111/j.1600-0501.2010.01941.x

http://dx.doi.org/10.1111/j.1600-0501.2010.01941.x

Idioma(s)

eng

Publicador

WILEY-BLACKWELL PUBLISHING, INC

Relação

Clinical Oral Implants Research

Direitos

restrictedAccess

Copyright WILEY-BLACKWELL PUBLISHING, INC

Palavras-Chave #animal study #bone healing #histology #implant dentistry #osseointegration #torque #DENTAL IMPLANTS #PRIMARY STABILITY #POSTERIOR MAXILLA #INSERTION TORQUE #BONE-DENSITY #FOLLOW-UP #IMMEDIATE #INSTALLATION #MINIPIGS #Dentistry, Oral Surgery & Medicine #Engineering, Biomedical
Tipo

article

original article

publishedVersion