Miniscrews and Mini-Implants Success Rates in Orthodontic Treatments: A Systematic Review and Meta-Analysis of Several Clinical Parameters

Beltrami, Riccardo; Sfondrini, Francesca

doi:10.4172/2161-1122.1000346

Cited by 5 publications

(9 citation statements)

References 32 publications

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“…This finding is in line with earlier studies that reported no significant difference in the failure rate of MSI based on insertion site and insertion side (left or right) [43,44]. This is contrary to another study that reported a slightly higher MSI success rate on the left side, possibly due to better oral hygiene maintenance by a righthanded person [45].…”

Section: Discussionsupporting

confidence: 89%

Expression of circulating cell-free nucleic acids around miniscrew implant during orthodontic tooth movement—a prospective study

et al. 2021

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Objectives Literature shows that the expression of various biomarkers in peri-miniscrew crevicular fluid (PMICF) is related to the stability of miniscrew implants (MSIs). The present study investigated the role and alterations in levels of circulating cell-free nucleic acids (cfNAs) in PMICF before and after orthodontic loading. Material and methods This prospective study consisted of forty-six MSIs placed between the second premolar and first molar in the maxillary and mandibular arches. Direct loading was done after 3 weeks of MSI insertion with nickel-titanium closed coil spring exerting a force of 200 g. The PMICF sample was collected at various time intervals, and the level of cfNA was determined. Clinical parameters, including implant mobility and gingival health, were also assessed. Pre-loading and post-loading parameters were assessed using Wilcoxon’s rank-sum test. Results Among 46 MSIs, 36 were stable during the study and 10 MSIs showed peri-implant inflammation and increased mobility. There was a significant rise in the cfNA concentration 24 h after implant insertion (0.4 ± 0.86 ng/μl). The level of cfNAs significantly decreased over 3 weeks and reached the baseline level (0.2 ± 0.31 ng/μl). There was also a significant rise in the levels of cfNA (0.8 ± 0.70 ng/μl) at 24 h after loading MSIs, which gradually decreased to 0.2 ± 0.24 ng/μl after 63 days. The expression of cfNAs was on the average 0.32 units more in the cases with failed implants (P = 0.05). Conclusions cfNA levels in PMICF showed an upward trend 24 h after MSI insertion and 24 h after orthodontic loading. The expression of cfNA was more in cases with failed MSIs. Hence, the cfNAs can be considered as a prognostic biomarker of MSI stability.

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Section: Discussionsupporting

confidence: 89%

Expression of circulating cell-free nucleic acids around miniscrew implant during orthodontic tooth movement—a prospective study

et al. 2021

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“…Despite smaller mini-implants are easier to insert between the roots, minor reduction in their size declines the torsional strength significantly and can increase the risk of implant fracture. Therefore, it is advisable to avoid miniscrews smaller than 1.2 or 1.3 mm in diameter when placing into the thick mandibular cortical bone, where miniscrew fracture is more likely to occur [6,17,[20][21][22][23][24][25]. A meta-analysis performed by Hong et al [14] also showed that increasing the TAD diameter above 1.4 mm gives a 1.61 times greater chance of stability.…”

Section: Discussionmentioning

confidence: 99%

Evidence-based selection of orthodontic miniscrews, increasing their success rate in the mandibular buccal shelf. A randomized, prospective clinical trial

et al. 2022

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Background Skeletal anchorage has made it possible to perform complex orthodontic tooth movements that are difficult or even impossible to achieve with conventional orthodontic treatment. Mandibular buccal shelf miniscrews, used for distalization, play a particularly important role in treatment of Class III malocclusion. Unfortunately, stability of the miniscrews placed in the mandible is still considered at higher risk of failure compared to other intraoral locations. The aim of our study was to determine the influence of the miniscrew size on their long-term stability, occurrence of oral mucosa inflammation and pain lasting over 48 h after implantation. Methods 184 Absoanchor® miniscrews (Dentos, South Korea) in two sizes: SH2018-10 (length 10 mm, ø 1.8–2.0 mm) and SH1514-08 (length 8 mm, ø 1.4–1.5 mm) were inserted in the mandibular buccal shelf in 92 Caucasians aged 20–50 years, diagnosed with Class III malocclusion that required en-masse distalization of the mandibular dentition. Data was statistically analyzed with the level of significance set at p = .05. Results 91.3% of the SH2018-10 and 75% of the SH1514-08 miniscrews were stable, and this difference was statistically significant (p < .05). Inflammation of the oral mucosa was noticed around both types of miniscrews and affected 50% of the SH2018-10 and 26.09% of the SH1514-08 group (p < .05). Pain lasting longer than 48 h after implantation was related to 60.87% and 20.65% of the SH2018-10 and the SH1514-08 miniscrews (p < .05), respectively. Inflammation associated with larger SH2018-10 miniscrews did not affect their stability (p > .05), contrary to the SH1514-08 ones (p < .05). When inflammation was present, the overall success rate declined to 64.29%, from 94.74% noted for TADs without inflammation. According to the log-rank test, smaller TADs failed significantly sooner than the larger ones (p = .002). Conclusion Larger SH2018-10 miniscrews are the anchorage of choice for the mandibular buccal shelf, despite triggering inflammation and long-lasting pain significantly more often than the smaller ones. Therefore, this issue should be discussed with every patient prior to miniscrew use. Trial registration ID: ClinicalTrials.gov Identifier: NCT05280678 Date of Registration: 15/03/2022. Retrospectively registered.

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“…The overall success rate was 87.09% (54 of 62 miniscrews) that was similar to the rates previously reported [ 11 ]. Also, a meta-analysis by Beltrami et al reported that the mean weighted overall success rate was 86.75 ± 8.48% [ 12 ].…”

Section: Discussionmentioning

confidence: 99%

“…Several studies has addressed this issue on the month or even long bones of different animals like dogs [ 13 ], rabbits [ 9 ], and minipigs [ 14 ] and even artificial bone [ 15 ]. But individual host-related factors of specimens which include bone quantity and quality, inflammation of the peri-implant tissue, proximity of the miniscrew to the adjacent teeth and cortical to trabecular bone ratio as well as the overall morphology of the patient can play a role in the survival of the orthodontic miniscrews [ 6 , 12 , 16 ]. Since soft tissue characteristics and bone quality can influence the results of the study, the outcomes of the animal studies cannot be simply generalized to the human.…”

Section: Discussionmentioning

confidence: 99%

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The effect of sandblasting and acid etching on survival rate of orthodontic miniscrews: a split-mouth randomized controlled trial

2021

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Background The aim of this study was to investigate the effect of surface roughening and acid etching on clinical success rate and removal and insertion torque of orthodontic miniscrews. Materials and methods Sixty-two orthodontic miniscrews (Jail Medical Corporation, Seoul, Korea) with the same design and dimensions (10-mm length, 2-mm diameter) are divided into two (sandblasted and acid-etched versus control) groups. The sample of the study was 31 patients whose miniscrews were needed for en masse retraction of the upper six anterior teeth. In this split-mouth study, the miniscrews were placed in the attached gingiva between the second premolar and the first molar. The side (left or right) was selected randomly. The miniscrews were loaded 6 weeks after insertion, and the patients were followed up after 3, 6, 10, 14, and 18 weeks and then for 4 weeks interval. Chi-square, correlation, and independent t tests were done using SPSS ver24 to interpret the data. Results The survival rate was 90.3% and 83.9% for the sandblasted and acid-etched versus the control group, respectively. The difference in survival rate was not statistically significant (p > 0.05). Removal torque was higher for the sandblasted group (p < 0.05). Younger patients showed less survival rate (p < 0.05) in both groups. Insertion side, namely, left or right, was not statistically significant. Conclusions Although sandblasting increased removal torque, it did not influence the survival rate of orthodontic miniscrews significantly.

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Miniscrews and Mini-Implants Success Rates in Orthodontic Treatments: A Systematic Review and Meta-Analysis of Several Clinical Parameters

Cited by 5 publications

References 32 publications

Expression of circulating cell-free nucleic acids around miniscrew implant during orthodontic tooth movement—a prospective study

Expression of circulating cell-free nucleic acids around miniscrew implant during orthodontic tooth movement—a prospective study

Evidence-based selection of orthodontic miniscrews, increasing their success rate in the mandibular buccal shelf. A randomized, prospective clinical trial

The effect of sandblasting and acid etching on survival rate of orthodontic miniscrews: a split-mouth randomized controlled trial

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