Factors Associated With the Stability of Mini-Implants for Orthodontic Anchorage: A Study of 414 Samples in Taiwan

Wu, Tzu-Ying; Kuang, Shou-Hsin; Wu, Cheng‐Hsien

doi:10.1016/j.joms.2009.04.015

Cited by 111 publications

(98 citation statements)

References 9 publications

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“…12 Because we used commercially available designs, the length of cylindrical designs (5.5 mm) was shorter than that of tapered designs (6.1 mm). Numerous studies [25][26][27][28][29] have established a consensus that screw length is not associated with failure or stability, and our study also highlighted the importance of engagement in cortical bone. Thus, differences in length can be deemed to have little impact in comparisons of stability in this study.…”

Section: Discussionsupporting

confidence: 64%

Stability comparison between commercially available mini-implants and a novel design: Part 1

Hong¹,

Lee²,

Webster³

et al. 2011

The Angle Orthodontist

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Objective: To compare mechanical stability among five mini-implant designs-a newly invented design and four commercially available designs that vary by shape and threading; to calculate external surface area of each design using high-resolution micro-computed tomography; and to evaluate the relationship between surface area and stability results. Materials and Methods: The four commercially available mini-implants-single-threaded and cylindrical (SC), single-threaded and tapered (ST), double-threaded and cylindrical (DC), doublethreaded and tapered (DT)-and a new implant that is designed to engage mostly in cortical bone with shorter and wider dimensions (N1) were inserted in simulated bone with cortical and trabecular bone layers. The mechanical study consisted of torque measurements and lateral displacement tests. External surface area was computed using a 25-mm micro-CT. Results: Maximum insertion torque, maximum removal torque, and force levels for displacements were the highest in N1, followed by DT, ST, DC, and SC (a 5 .05). The surface area was largest in DT, followed by N1, ST, DC, and SC. Surface area engaged in cortical bone, however, was the greatest in N1. The surface area of mini-implants had positive correlation with stability. Conclusion: Among commercial designs, both added tapering and double threading improved stability. N1 was the most stable design within this research design. The new design has the potential to be clinically superior; it has enhanced stability and there is diminished risk of endangering nearby anatomic structures during placement and orthodontic treatment, but the design requires refinements to reduce insertion torque to avoid clinical difficulty and patient discomfort. (Angle

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Section: Discussionsupporting

confidence: 64%

Stability comparison between commercially available mini-implants and a novel design: Part 1

Hong¹,

Lee²,

Webster³

et al. 2011

The Angle Orthodontist

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show abstract

“…Other studies reported a higher success rate for miniplates than for MIs (1,8,11). Wu et al (12) evaluated 414 MIs, including stainless steel and Ti-alloy MIs, and reported a success rate of 89.9%, which is higher than that in the present study. However, although the MI materials were similar, the surgical procedures differed.…”

Section: Discussioncontrasting

confidence: 75%

“…Drilling into the alveolar bone usually blunts the tip of the MI, which increases the risk of MI breakage. No pilot holes were drilled for the present MIs, which may explain the difference in success rates between studies (12).…”

Section: Discussionmentioning

confidence: 95%

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A prospective study of factors associated with orthodontic mini-implant survival

Tsai

Chang

Pan

et al. 2016

Journal of Oral Science

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“…One of the key points of the stability of the temporary bone anchoring is to minimize the inflammatory risk around the screws [9][10][11][12].…”

Section: Commentsmentioning

confidence: 99%

Sub-mucosal micro-screws as ideal temporary anchorage devices

Doustkam

Riemenschneider-Chillès

2017

Med Buccale Chir Buccale

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Factors Associated With the Stability of Mini-Implants for Orthodontic Anchorage: A Study of 414 Samples in Taiwan

Cited by 111 publications

References 9 publications

Stability comparison between commercially available mini-implants and a novel design: Part 1

Stability comparison between commercially available mini-implants and a novel design: Part 1

A prospective study of factors associated with orthodontic mini-implant survival

Sub-mucosal micro-screws as ideal temporary anchorage devices

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