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学科主题: 口腔医学
题名:
Influence of placement depth on bone remodeling around tapered internal connection implants: a histologic study in dogs
作者: Huang, Baoxin1,2,3; Meng, Huanxin1; Zhu, Weidong1; Witek, Lukasz4,5; Tovar, Nick4; Coelho, Paulo G.4,6
关键词: animal study ; biologic width ; crestal bone resorption ; implant-abutment interface ; subcrestal placement
刊名: CLINICAL ORAL IMPLANTS RESEARCH
发表日期: 2015-08-01
DOI: 10.1111/clr.12384
卷: 26, 期:8, 页:942-949
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Dentistry, Oral Surgery & Medicine ; Engineering, Biomedical
研究领域[WOS]: Dentistry, Oral Surgery & Medicine ; Engineering
关键词[WOS]: SUBMERGED TITANIUM IMPLANTS ; IN-VITRO EVALUATION ; CRESTAL BONE ; ABUTMENT INTERFACE ; DENTAL IMPLANTS ; RADIOGRAPHIC EVALUATION ; SUBCRESTAL PLACEMENT ; MICROBIAL LEAKAGE ; MICROGAP ; LEVEL
英文摘要:

Objectives: To evaluate the influence of implant-abutment interface (IAI) placement depth on bone remodeling around implants with two different types of tapered internal IAI: screwed-in (SI) and tapped-in (TI) connections in dogs.

Materials and methods: Eight weeks post mandibular tooth extraction in six beagle dogs, two SI implants (OsseoSpeed (TM), Astra Tech, DENTSPLY) and two TI implants (Integra-CP (TM), Bicon LLC) were placed in one side of the mandible. The four experimental groups were as follows: (i) SI-placed equicrestally (SIC); (ii) TI-placed equicrestally (TIC); (iii) SI-placed 1.5 mm subcrestally (SIS); and (iv) TI-placed 1.5 mm subcrestally (TIS). Healing abutments were connected 12 weeks after implant placement. Sixteen weeks later, the dogs were sacrificed and histomorphometric analysis was performed. Histometrical outcomes were evaluated using a nonparametric Brunner-Langer model.

Results: Mean distance from the IAI to first bone-implant contact (IAI-fBIC) was 0.88 mm (median: 0.77; SD: 0.54) for SIC group, 1.23 mm (median: 1.22; SD: 0.66) for TIC group, 0.41 mm (median: 0.31; SD: 0.36) for SIS group, and 0.41 mm (median: 0.26; SD: 0.45) for TIS group. Subcrestal groups showed lower IAI-fBIC compared with equicrestal groups (P < 0.001). Connective tissue presented similar measurements regardless of the IAI placement depth and IAI type (P > 0.05), but the epithelium length and peri-implant soft tissue length in subcrestal groups were significant larger than that in the equicrestal groups (P < 0.001 and P = 0.004, respectively).

Conclusion: Subcrestal implant placement with tapered internal IAI is beneficial for bone contact with the implant neck, and concurrently, it may not increase the soft tissue inflammation around IAI.

语种: 英语
项目资助者: Bicon LLC Dental Implants, Boston, MA, USA
WOS记录号: WOS:000358618400012
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/57623
Appears in Collections:北京大学口腔医学院_牙周科_期刊论文

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作者单位: 1.NYU, Coll Dent, Dept Biomat & Biomimet, New York, NY USA
2.Guangdong Prov Key Lab Stomatol, Guangzhou, Guangdong, Peoples R China
3.Peking Univ, Dept Periodontol, Sch & Hosp Stomatol, Beijing 100081, Peoples R China
4.Sun Yat Sen Univ, Dept Oral Implantol, Guanghua Sch Stomatol, Guangzhou 510275, Guangdong, Peoples R China
5.Oklahoma State Univ, Sch Chem Engn, Stillwater, OK 74078 USA
6.NYU, Coll Dent, Dept Periodontol & Implant Dent, New York, NY USA

Recommended Citation:
Huang, Baoxin,Meng, Huanxin,Zhu, Weidong,et al. Influence of placement depth on bone remodeling around tapered internal connection implants: a histologic study in dogs[J]. CLINICAL ORAL IMPLANTS RESEARCH,2015,26(8):942-949.
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