Critical factors for the success of orthodontic mini-implants: A systematic review

Chen, Yan; Kyung, Hee-Moon; Zhao, Wen; Yu, Won Jae

doi:10.1016/j.ajodo.2007.08.017

Cited by 173 publications

(129 citation statements)

References 18 publications

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“…of the time, than mini-screws that we connected indirectly to appliances, whose failure rate was 25%. This is the reverse of most reports in the literature 1 , where indirect connections have been associated with slight amounts of anchorage loss. It is possible that operators have connected slightly mobile mini-screws indirectly as a precautionary measure that failed to accomplish its purpose in some cases.…”

Section: -1 -Critical Analysis Of the Resultscontrasting

confidence: 49%

Successes and failures with orthodontic mini-screws: a retrospective clinical study of 95 mini-screw implantations

Costi¹

2010

J Dentofacial Anom Orthod

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Section: -1 -Critical Analysis Of the Resultscontrasting

confidence: 49%

Successes and failures with orthodontic mini-screws: a retrospective clinical study of 95 mini-screw implantations

Costi¹

2010

J Dentofacial Anom Orthod

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“…[25][26][27][28][29] Miniplates have been shown to be well accepted as skeletal anchorage by both patients and providers and have turned out to be a safe and effective adjunct for complex orthodontic treatment. 24 However, the success rate of miniplates for skeletal anchorage in orthodontics [30][31][32][33] has not been investigated so thoroughly as that of miniscrews, and research has been limited to adolescent and adult patients.…”

Section: Discussionmentioning

confidence: 99%

Success rate of miniplate anchorage for bone anchored maxillary protraction

Clerck¹,

Swennen²

2011

The Angle Orthodontist

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Objective: To evaluate the success rate of Bollard miniplate anchorage for bone anchored maxillary protraction (BAMP). Materials and Methods: Twenty-five consecutive patients (mean age, 12.0 6 1.2 years; range, 8.7-14.8 years) with maxillary hypoplasia without congenital or acquired deformation were included in this study. A total of 100 Bollard modified miniplates were placed by the same surgeon. Ninety-nine miniplates were inserted under general anesthesia, and one was placed under local anesthesia because of initially soft bone conditions. Loading of the miniplates with 150 g elastics was initiated at 17.5 6 6.9 days (range, 11-38 days) after surgery. Mean follow-up was provided at 20.8 6 11.1 months (range, 6.5-46.2 months). Results: The overall success rate of miniplate anchorage in terms of stability was 97%. During orthodontic loading, five miniplates showed signs of mobility. After interruption of loading over 2 months, two miniplates became stable again. However, a total of three miniplates needed to be removed and were successfully replaced under local anesthesia after a mean healing period of 3 months. Conclusion: Skeletal anchorage by means of Bollard modified miniplates is effective for BAMP. Success depends on proper presurgical patient counseling, minimal invasive surgery, good postsurgical instructions, and orthodontic follow-up. (Angle Orthod. 2011;81:1010-1013

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“…1 Despite the tremendous success of mini-implants in facilitating treatment outcomes, however, the stability of mini-implants remains an important issue that needs to be resolved because failure rates are widely variable and could be as high as 25%. 2,3 As the potential uses of mini-implants have broadened, recent studies have focused on examining factors contributing to failure and evaluating stability. 4,5 The stability of mini-implants is generally defined with two main components.…”

Section: Introductionmentioning

confidence: 99%

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

show abstract

Critical factors for the success of orthodontic mini-implants: A systematic review

Cited by 173 publications

References 18 publications

Successes and failures with orthodontic mini-screws: a retrospective clinical study of 95 mini-screw implantations

Successes and failures with orthodontic mini-screws: a retrospective clinical study of 95 mini-screw implantations

Success rate of miniplate anchorage for bone anchored maxillary protraction

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

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