Temporary Skeletal Anchorage Techniques

Jones, Jason P.; Elnagar, Mohammed H.; Pérez, Daniel

doi:10.1016/j.coms.2019.08.003

Cited by 23 publications

(20 citation statements)

References 42 publications

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“… 3 Nowadays, TADs are widely used in daily orthodontic practice to increase the effectiveness of dental movement (protraction, retraction, intrusion, or uprighting) or the effectiveness of orthopedic appliances, in the form of hybrid or bone-borne designs. 4 - 6 Nevertheless, the clinical use of miniscrews is associated with potential side effects (i.e., unwanted effects that are generally predictable and expected) and complications (i.e., unwanted and unexpected events due to treatment, and recognized as events that can happen), which can occur during their insertion, use, or removal. 7 …”

Section: Introductionmentioning

confidence: 99%

Complications reported with the use of orthodontic miniscrews: A systematic review

et al. 2021

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Objective The aim of this systematic review was to evaluate the complications and side effects associated with the clinical use of orthodontic miniscrews by systematically reviewing the best available evidence. Methods A survey of articles published up to March 2020 investigating the complications associated with miniscrew insertion, in both the maxilla and mandible, was performed using 7 electronic databases. Clinical studies, case reports, and case series reporting complications associated with the use of orthodontic miniscrew implants were included. Two authors independently performed study selection, data extraction, and risk-of-bias assessment. Results The database survey yielded 24 articles. The risk-of-bias assessment revealed low methodological quality for the included studies. The most frequent adverse event reported was root injury with an associated periradicular lesion, vitality loss, pink discoloration of the tooth, and transitory loss of pulp sensitivity. Chronic inflammation of the soft tissue surrounding the miniscrew with mucosal overgrowth was also reported. The other adverse events reported were lesion of the buccal mucosa at the insertion site, soft-tissue necrosis, and perforation of the floor of the nasal cavity and maxillary sinus. Adverse events were also reported after miniscrew removal and included secondary bleeding, miniscrew fracture, scars, and exostosis. Conclusions These findings highlight the need for clinicians to preliminarily assess generic and specific insertion site complications and side effects.

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Section: Introductionmentioning

confidence: 99%

Complications reported with the use of orthodontic miniscrews: A systematic review

et al. 2021

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“…The development of miniscrew implant (MSI) extends the range of tooth movement in orthodontic treatment. 1,2 Compared with conventional anchorage devices, MSI is more effective regardless of clinical settings or the way it is used. 3 Although MSI gains popularity due to easy insertion and removal, low cost, small size and noncompliance from patients, it may loosen before achieving the treatment goal for several reasons.…”

Section: Introductionmentioning

confidence: 99%

The effects of cortical bone thickness and miniscrew implant root proximity on the success rate of miniscrew implant: A retrospective study

Zhang

Choi

et al. 2021

Orthod Craniofacial Res

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Objective: To investigate the effects of cortical bone thickness (CBT), miniscrew implant root proximity (MRP) and other related factors on the success rate of miniscrew implant (MSI). Materials and Methods: Four hundred and five MSIs placed in 171 patients were analysed in this retrospective study. The primary predictor variables were CBT and MRP at MSI insertion sites. The predictor variables also included patient, location, MSI design and procedure related factors. The outcome variable was the survival of MSI. The differences in measurement data between success group and failed group were evaluated by the analysis of variance and independent samples t tests. Patient, location, MSI design and procedure related factors associated with the MSI prognosis were analysed by survival analysis with Cox proportional hazard regression model. The P value was set at .05. And the survival curves of independent factors were plotted. Results:The overall success rate of MSI was 82.7%. The age of MSI host, CBT, interdental root distance (IRD) and MRP at MSI sites showed no significant differences between failed group and success group. CBT and insertion jaws were independent prognosis factors screened out by Cox proportional hazard regression model. Failure risk (hazard ratio) of MSI with CBT <1 mm was 4.72. The failure risk in the mandible was 3.80 times as high as that in the maxilla. Conclusion:Inadequate CBT (<1 mm) contributed to the failure of MSI. MSI placed in the maxilla showed better prognosis compared to the mandible. MRP had no significant effect on the prognosis.

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“…The orthodontic miniscrew is a common choice of TSAD for anchorage reinforce-ment [ 5 , 25 ], given the advantages of versatility, small in size, minimal surgical invasion, and low cost [ 26 ]. The mechanical stability of the miniscrew can be improved by design variations [ 19 , 20 , 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Head Hole Position on the Rotational Resistance and Stability of Orthodontic Miniscrews: A Three-Dimensional Finite Element Study

Choi

Kim

et al. 2021

Sensors

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The orthodontic miniscrew is driven into bone in a clockwise direction. Counter-clockwise rotational force applied to the implanted miniscrew can degrade the stability. The purpose of this three-dimensional finite element study was to figure out the effect of shifting the miniscrew head hole position from the long axis. Two miniscrew models were developed, one with the head hole at the long axis and the other with an eccentric hole position. One degree of counter-clockwise rotation was applied to both groups, and the maximum Von-Mises stress and moment was measured under various wire insertion angles from −60° to +60°. All Von-Mises stress and moments increased with an increase in rotational angle or wire insertion angle. The increasing slope of moment in the eccentric hole group was significantly higher than that in the centric hole group. Although the maximum Von-Mises stress was higher in the eccentric hole group, the distribution of stress was not very different from the centric hole group. As the positive wire insertion angles generated a higher moment under a counter-clockwise rotational force, it is recommended to place the head hole considering the implanting direction of the miniscrew. Clinically, multidirectional and higher forces can be applied to the miniscrew with an eccentric head hole position.

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Temporary Skeletal Anchorage Techniques

Cited by 23 publications

References 42 publications

Complications reported with the use of orthodontic miniscrews: A systematic review

Complications reported with the use of orthodontic miniscrews: A systematic review

The effects of cortical bone thickness and miniscrew implant root proximity on the success rate of miniscrew implant: A retrospective study

Effect of Different Head Hole Position on the Rotational Resistance and Stability of Orthodontic Miniscrews: A Three-Dimensional Finite Element Study

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