Success rates and risk factors of miniscrew implants used as temporary anchorage devices for orthodontic purposes

Papadopoulos, Moschos A.; Papageorgiou, Spyridon N.; Zogakis, Ioannis P.

doi:10.1016/b978-0-7234-3649-2.00049-x

Cited by 3 publications

(3 citation statements)

References 77 publications

(115 reference statements)

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“…That evidence is also supported by significantly lower Ca concentration and reduced cortical bone thickness in those rats. In general, decreased cortical bone thickness is associated with increased stresses that could cause bone resorption [ 21 ], and simultaneously reduced Ca content in the femoral bone only confirms this fact. Our findings differ from those reported by Yamaguchi et al [ 6 ], who mentioned a higher Ca concentration and increased ALP activity in the femoral bone of rats administered with bee pollen extract obtained from Cistus ladaniferus (5 and 10 mg/100 g bw).…”

Section: Discussionmentioning

confidence: 99%

Dose-Dependent Impact of Bee Pollen Supplementation on Macroscopic and Microscopic Structure of Femoral Bone in Rats

Martiniaková

Boboňová

Toman

et al. 2021

Animals

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Bee pollen has been successfully used as a feed additive with beneficial impacts on productive, reproductive, and immune conditions of animals. However, its effect on bone structure and bone health remains controversial. Therefore, the purpose of our study was to examine the impact of bee pollen supplementation on macroscopic and microscopic structure of a femoral bone using rats as suitable animal models. Male rats (1 month-old) were assigned into three groups: control (C group) that was fed a standard diet without bee pollen and two bee pollen supplemented groups (P1 and P2 groups) that received an experimental diet including 0.5% and 0.75% of bee pollen, respectively, for 3 months. A number of unfavorable effects of 0.75% bee pollen administration on bone weight, cortical bone thickness, calcium content, alkaline phosphatase activity, sizes of primary osteons’ vascular canals, Haversian canals and secondary osteons in the cortical bone have been recorded, whereas these bone parameters were significantly decreased in the P2 group versus the C group. On the contrary, the concentration of 0.5% did not affect any of bone features mentioned above. In conclusion, the impact of bee pollen supplementation on femoral bone structure of rats depends on the dose used.

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Section: Discussionmentioning

confidence: 99%

Dose-Dependent Impact of Bee Pollen Supplementation on Macroscopic and Microscopic Structure of Femoral Bone in Rats

Martiniaková

Boboňová

Toman

et al. 2021

Animals

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“…Provisional anchors also have been placed in advanced dental treatments, as reviewed by Sofie Hoste et al [ 16 ], aiming both the objective of bringing an overview of the fundamental and regional risk factors during TAD implementation and the demands for placing it, as well as to highlight the orthodontic evidence of different TADs units.…”

Section: Reviewmentioning

confidence: 99%

Modern Anchorage Systems in Orthodontics

Umalkar¹,

Jadhav²,

Paul³

et al. 2022

Cureus

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Anchorage has been a vital topic since the origin of orthodontics. In the orthodontic process, gentle, constant pressure is applied to the teeth that need to be moved against the other teeth, which serve as the anchoring unit. The anchoring teeth must be completely stable. The introduction of temporary anchorage devices to the orthodontic field has made it possible to overcome conventional anchorage and its limitations. Mini implants have widened the horizon of the orthodontic field. Skeletal anchorage has, to a large degree, replaced conventional anchorage in a situation where anchorage is considered either critical, insufficient, or likely to result in undesirable side effects such as vertical displacements generated by intermaxillary force systems. Over the last few years, anchorage control with mini-implants has acquired plenty of significance in the clinical management of orthodontic patients. The mode of anchorage facilitated by these implant systems has a unique characteristic owing to their temporary use, which results in a transient, albeit absolute anchorage. The foregoing properties, together with the recently achieved simple application of these screws, have increased their popularity, establishing them as a necessary treatment option in complex cases that would have otherwise been impossible to treat. This comprehensive review aims to present and discuss the historical view, clinical uses, benefits, and drawbacks of the mini-screw implants used to obtain a temporary anchorage for orthodontic applications. Topics to be discussed include classification, types and properties, types of screw, head, and thread, their clinical applications, sites, and placement method selection.

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“…MIs are fabricated from pure titanium or titanium alloy with a diameter of 1–2 mm and length of 8–20 mm [ 16 ]. They remain stable during orthodontic treatment with minimum anchorage loss and are more effective than conventional anchorage means [ 17 – 19 ]. Their success rate ranges from 59 to 100% with an average of 86.5% [ 18 – 20 ].…”

Section: Introductionmentioning

confidence: 99%

Mandibular molar uprighting using orthodontic miniscrew implants: a systematic review

2018

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The purpose of this systematic review was to identify studies and present the use of miniscrew implants (MIs) as an alternative treatment to mandibular molar uprighting. An electronic search and handsearching were conducted by two independent reviewers to identify relevant articles, published up to January 27, 2017. In order to methodologically assess the eligible studies, a pilot checklist consisting of 22 items was also implemented. After exclusion of all the irrelevant papers, only 17 studies were included, presenting 27 cases of mandibular molar uprighting in all planes using both direct and indirect force traction by MIs. Regarding the quality evaluation, the mean score of the included studies was 13.2, indicating a rather poor methodology implemented in the majority of the included cases. Due to many advantages, MIs provide a unique treatment alternative and constitute a reliable solution for treating tipped or impacted molars. Regarding the force application, a direct method is simpler, as it requires one MI and a single bracket or button, minimizing the patient’s discomfort and also reducing chair time compared to more complex indirect anchorage. It also eliminates the possibility of unwanted movement of the anchorage unit, which can occur even with indirect anchorage as a result of technical errors. However, direct anchorage has limitations in cases of lingually tipped or rotated molars because a single force may be insufficient to upright the tooth.

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Success rates and risk factors of miniscrew implants used as temporary anchorage devices for orthodontic purposes

Cited by 3 publications

References 77 publications

Dose-Dependent Impact of Bee Pollen Supplementation on Macroscopic and Microscopic Structure of Femoral Bone in Rats

Dose-Dependent Impact of Bee Pollen Supplementation on Macroscopic and Microscopic Structure of Femoral Bone in Rats

Modern Anchorage Systems in Orthodontics

Mandibular molar uprighting using orthodontic miniscrew implants: a systematic review

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