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RISS 인기검색어
- 검색키워드
- 저자 : Damian J. Lee (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Lee, Damian J. Korean Academy of Periodontology 2013 Journal of Periodontal & Implant Science Vol.43 No.1
The purpose of this review is to examine the performance of attachments used in implant-supported overdenture (IOD) in both clinical and in vitro settings and report the compiled findings, comparisons, and trends in the research literature. Articles published in PubMed on IOD attachment systems and performance were reviewed. Non-original articles were excluded. For each article included, the type of study, number of implants, number of attachment systems, and study outcome were recorded. Of the 283 articles found, 158 met the inclusion criteria. Ninety-four articles were clinical studies and 64 articles were in vitro studies. Studies on retention were the most common for in vitro studies, and four or more attachment systems were compared in most articles with significant differences in outcome. A clinical outcome of one attachment system was most common for clinical studies, while most studies had neutral outcomes overall. Ball attachment was the most commonly tested IOD attachment system. The trend in the literature showed that there is a large discrepancy between the study designs and outcomes between the clinical and the in vitro studies for IOD. Further clinical studies that can validate in vitro research should be encouraged to address this discrepancy between the two areas.
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Performance of attachments used in implantsupported overdentures: review of trends in the literature
Damian J. Lee 대한치주과학회 2013 Journal of Periodontal & Implant Science Vol.43 No.1
The purpose of this review is to examine the performance of attachments used in implant-supported overdenture (IOD) in both clinical and in vitro settings and report the compiled findings, comparisons, and trends in the research literature. Articles published in PubMed on IOD attachment systems and performance were reviewed. Non-original articles were excluded. For each article included, the type of study, number of implants, number of attachment systems, and study outcome were recorded. Of the 283 articles found, 158 met the inclusion criteria. Ninety-four articles were clinical studies and 64 articles were in vitro studies. Studies on retention were the most common for in vitro studies, and four or more attachment systems were compared in most articles with significant differences in outcome. A clinical outcome of one attachment system was most common for clinical studies, while most studies had neutral outcomes overall. Ball attachment was the most commonly tested IOD attachment system. The trend in the literature showed that there is a large discrepancy between the study designs and outcomes between the clinical and the in vitro studies for IOD. Further clinical studies that can validate in vitro research should be encouraged to address this discrepancy between the two areas.
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Differences between buccal and lingual bone quality and quantity of peri-implant regions
Kim, Do-Gyoon,Elias, Kathy L.,Jeong, Yong-Hoon,Kwon, Hyun-Jung,Clements, Matthew,Brantley, William A.,Lee, Damian J.,Han, Jung-Suk Elsevier 2016 Journal of the mechanical behavior of biomedical m Vol.60 No.-
<P><B>Abstract</B></P> <P>The objective of the current study was to examine whether peri-implant bone tissue properties are different between the buccal and lingual regions treated by growth factors. Four dental implant groups were used: titanium (Ti) implants, alumina-blasted zirconia implants (ATZ-N), alumina-blasted zirconia implants with demineralized bone matrix (DBM) (ATZ-D), and alumina-blasted zirconia implants with rhBMP-2 (ATZ-B). These implants were placed in mandibles of six male dogs. Nanoindentation elastic modulus (<I>E</I>) and plastic hardness (<I>H</I>) were measured for the buccal and lingual bone tissues adjacent and away from the implants at 3 and 6 weeks post-implantation. A total of 2281 indentations were conducted for 48 placed implants. The peri-implant buccal region had less bone quantity resulting from lower height and narrower width of bone tissue than the lingual region. Buccal bone tissues had significant greater mean values of <I>E</I> and <I>H</I> than lingual bone tissues at each distance and healing period (<I>p</I><0.007). Nearly all implant treatment groups displayed lower mean values of the <I>E</I> at the lingual bone tissues than at the buccal bone tissues (<I>p</I><0.046) although the difference was not significant for the Ti implant group (<I>p</I>=0.758). The DBM and rhBMP-2 treatments stimulated more peri-implant bone remodeling at the lingual region, producing more immature new bone tissues with lower <I>E</I> than at the buccal region. This finding suggests that the growth factor treatments to the zirconia implant system may help balance the quantity and quality differences between the peri-implant bone tissues.</P>
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