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Effect of microthreads on coronal bone healing of narrow-diameter implants with reverse-tapered design in beagle dogs.
Chang, Yun-Young; Kim, Su-Hwan; Park, Keun-Oh; Yun, Jeong-Ho.
Afiliación
  • Chang YY; Division of Periodontology, Department of Dentistry, Inha International Medical Center, Incheon, Korea.
  • Kim SH; Department of Periodontics, Asan Medical Center & Department of Dentistry, University of Ulsan College of Medicine, Seoul, Korea.
  • Park KO; Department of Bio-fibers and Materials Science, Kyungpook National University, Daegu, Korea.
  • Yun JH; Department of Periodontology, School of Dentistry and Institute of Oral Bioscience, Chonbuk National University, Jeonju, Korea.
Clin Oral Implants Res ; 28(12): 1532-1542, 2017 Dec.
Article en En | MEDLINE | ID: mdl-28543806
OBJECTIVES: The objective of this study was to investigate the effect of microthreads on the coronal bone healing of narrow-diameter implants with reverse-tapered design. MATERIAL AND METHODS: A total of 52 implants were classified into two groups according to presence or absence of coronal microthreads, the reverse-tapered narrow-diameter implant (RTN) group, and the reverse-tapered narrow-diameter implant with microthreads (RTNM) group. The implants were installed in split-mouth design in the edentulous mandible of six dogs. Three animals were sacrificed at 4 weeks and three at 8 weeks. Resonance frequency analysis, bone measurement using microcomputed tomography (micro-CT), removal torque test, and histometric analysis were performed. RESULTS: No significant differences in implant stability quotient value were observed between the groups at baseline, 4 weeks, or 8 weeks. Bone measurement using micro-CT showed that bone-implant contact volume (BICV) and bone-implant contact volume ratio (BICVR) in the coronal part of RTNM were statistically higher than those in RTN at 4 and 8 weeks. Histometric analysis showed statistically higher bone-implant contact length (BICL) in the coronal part of RTNM than in RTN at 4 weeks; however, bone-implant contact ratio (BICR) was not significantly different between the groups. At 8 weeks, the BICL and BICR did not differ significantly between the groups. Removal torque test showed no significant differences between the groups at 4 and 8 weeks. CONCLUSIONS: The microthreads might facilitate more coronal bone-implant contact due to increased surface areas at an early healing phase; however, they did not significantly affect coronal bone healing at 8 weeks.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cicatrización de Heridas / Implantes Dentales / Oseointegración / Diseño de Prótesis Dental Límite: Animals Idioma: En Revista: Clin Oral Implants Res Asunto de la revista: ODONTOLOGIA Año: 2017 Tipo del documento: Article Pais de publicación: Dinamarca
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cicatrización de Heridas / Implantes Dentales / Oseointegración / Diseño de Prótesis Dental Límite: Animals Idioma: En Revista: Clin Oral Implants Res Asunto de la revista: ODONTOLOGIA Año: 2017 Tipo del documento: Article Pais de publicación: Dinamarca