Evidence map›Paper›PMID 25469670›Full record

ArticleThe Angle orthodontist2015

Microdamage generation by tapered and cylindrical mini-screw implants after pilot drilling.

Emily Taing-Watson, Thomas R Katona, Kelton T Stewart, Ahmed Ghoneima, Gabriel T M Chu, Hee-Moon Kyung, Sean S Liu

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in The Angle orthodontist, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Revisiting the Complications of Orthodontic Miniscrew.BioMed research international · 2022
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Emily Taing-Watsona   Former resident, Department of Orthodontics and Oral Facial Genetics, Indiana University School of Dentistry, Indiana University - Purdue University Indianapolis, Indianapolis, Ind.
Thomas R Katonab   Associate Professor, Department of Orthodontics and Oral Facial Genetics, Indiana University School of Dentistry; Department of Mechanical Engineering, School of Engineering and Technology, Indiana University - Purdue University Indianapolis, Indianapolis, Ind.
Kelton T Stewartc   Assistant Professor, Department of Orthodontics and Oral Facial Genetics, Indiana University School of Dentistry, Indiana University - Purdue University Indianapolis, Indianapolis, Ind.
Ahmed Ghoneimac   Assistant Professor, Department of Orthodontics and Oral Facial Genetics, Indiana University School of Dentistry, Indiana University - Purdue University Indianapolis, Indianapolis, Ind.
Gabriel T M Chud   Associate Professor, Department of Restorative Dentistry, Division of Dental Biomaterials, Indiana University School of Dentistry, Indiana University - Purdue University Indianapolis, Indianapolis, Ind.
Hee-Moon Kyunge   Professor and Chair, Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, Korea.
Sean S Liuc   Assistant Professor, Department of Orthodontics and Oral Facial Genetics, Indiana University School of Dentistry, Indiana University - Purdue University Indianapolis, Indianapolis, Ind.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo investigate the relationship between mini-screw implant (MSI) diameter (1.6 vs 2.0 mm) and shape (tapered vs cylindrical) and the amount of microdamage generated during insertion. MATERIALS AND

methodsThirty-six cylindrical and 36 tapered MSIs, 6 mm long, were used in this study. Half of each shape was 1.6 mm in diameter, while the other half was 2.0 mm. After pilot drilling, four and five MSIs were inserted, respectively, into fresh cadaveric maxillae and mandibles of dogs. Bone blocks containing the MSIs were sectioned and ground parallel to the MSI axis. Epifluorescent microscopy was used to measure overall cortical thickness, crack length, and crack number adjacent to the MSI. Crack density and total microdamage burden per surface length were calculated. Three-way analysis of variance (ANOVA) was used to test the effects of jaw, and MSI shape and diameter. Pairwise comparisons were made to control the overall significance level at 5%.

resultsThe larger (2.0 vs 1.6 mm) cylindrical MSIs increased the numbers, lengths, and densities of microcracks, and the total microdamage burden. The same diameter cylindrical and tapered MSIs generated a similar number of cracks and crack lengths. More total microdamage burden was created by the 2.0-mm cylindrical than the 2.0-mm tapered MSIs. Although higher crack densities were produced by the insertion of 1.6-mm tapered MSIs, there was no difference in total microdamage burden induced by 1.6-mm tapered and 1.6-mm cylindrical MSIs.

conclusionsPilot drilling is effective in reducing microdamage during insertion of tapered MSIs. To prevent excessive microdamage, large diameter and cylindrical MSIs should be avoided.

Indexed as

Dental ImplantsDental Stress AnalysisFemaleHumansMaleOrthodontic Anchorage ProceduresStress, MechanicalDental ImplantsCylindricalMicrodamageMini-screw implantsTapered

Identifiers

PMID25469670
PMCPMC8610390

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.