Implant biomechanical stability variation at early implantation times in vivo

an experimental study in dogs.

Julio B. Gomes, Felipe E. Campos, Charles Marin, Hellen S. Teixeira, Estevam A. Bonfante, Marcelo Suzuki, Lukasz Witek, Darceny Zanetta-Barbosa, Paulo G. Coelho

Research output: Contribution to journalArticle

Abstract

To demonstrate the degree of stability decrease and subsequent increase of dental implants at early implantation times in a beagle model. The mandibular premolars and first molars of eight beagle dogs were extracted and the ridges allowed to heal for 8 weeks. Thirty-two (n = 16 each group) implants were placed bilaterally, and remained in vivo for 1 and 3 weeks. The implants with comparable dimensions were divided as follows: group 1, Straumann Bone Level with SLActive surface; group 2, Nobel Speedy Replace RP with TiUnite surface. During insertion and following sacrifice, the implants were torqued to determine insertion and interface failure values. Histologic sections were prepared for microscopy. Statistical analysis was performed using Kruskal-Wallis and multiple paired and non-paired t tests considering unequal variances at a 95% level of significance. High insertion torque values were observed along with a significant decrease at 1 week in vivo (P = .003). At 3 weeks, the biomechanical fixation levels increased and were comparable to the insertion torque value. Histology showed that interfacial bone remodeling and initial woven bone formation was observed around both implant groups at 1 and 3 weeks. As time elapsed early after implantation, the biomechanical stability of dental implants initially decreased and subsequently increased.

Original languageEnglish (US)
JournalThe International journal of oral & maxillofacial implants
Volume28
Issue number3
StatePublished - May 2013

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Dental Implants
Torque
Dogs
Bone Remodeling
Bicuspid
Osteogenesis
Microscopy
Histology
Bone and Bones

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Implant biomechanical stability variation at early implantation times in vivo : an experimental study in dogs. / Gomes, Julio B.; Campos, Felipe E.; Marin, Charles; Teixeira, Hellen S.; Bonfante, Estevam A.; Suzuki, Marcelo; Witek, Lukasz; Zanetta-Barbosa, Darceny; Coelho, Paulo G.

In: The International journal of oral & maxillofacial implants, Vol. 28, No. 3, 05.2013.

Research output: Contribution to journalArticle

Gomes, JB, Campos, FE, Marin, C, Teixeira, HS, Bonfante, EA, Suzuki, M, Witek, L, Zanetta-Barbosa, D & Coelho, PG 2013, 'Implant biomechanical stability variation at early implantation times in vivo: an experimental study in dogs.', The International journal of oral & maxillofacial implants, vol. 28, no. 3.
Gomes, Julio B. ; Campos, Felipe E. ; Marin, Charles ; Teixeira, Hellen S. ; Bonfante, Estevam A. ; Suzuki, Marcelo ; Witek, Lukasz ; Zanetta-Barbosa, Darceny ; Coelho, Paulo G. / Implant biomechanical stability variation at early implantation times in vivo : an experimental study in dogs. In: The International journal of oral & maxillofacial implants. 2013 ; Vol. 28, No. 3.
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