Trial reportThe Angle orthodontist2019
Failure rates for stainless steel versus titanium alloy infrazygomatic crest bone screws: A single-center, randomized double-blind clinical trial.
Trial report in The Angle orthodontist, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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.
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.
Who cites it
18 citing papers in PubMed, 59 citations in OpenAlex.
- Stainless steel or titanium mini-implants?The Angle orthodontist · 2020Trial
- Finite element analysis of maxillary arch distalization using skeletal anchorage at three different application regions.Scientific reports · 2025Article
- Evaluation of Two Mini-implant Lengths in the Infrazygomatic Crest Region: A Randomized Clinical Trial.European journal of dentistry · 2025Article
- Article
- Study on the Reasonability of Single-Objective Optimization in Miniscrew Design.Materials (Basel, Switzerland) · 2025Article
- The success rate of infrazygomatic mini-implants placed with and without surgical guides: a historical control study.BMC oral health · 2025Article
- Extra-alveolar miniscrews: are all brands similar?Dental press journal of orthodontics · 2025Article
- An in vitro study of a combined patient-specific device for safe and accurate insertion of infrazygomatic crest miniscrews.The Angle orthodontist · 2025Article
- The Use of the Surgical Guide for Placing Miniscrew in Treatment of Class II Subdivision: A Case Report With 2-Year Follow-Up.Case reports in dentistry · 2025Article
- Effects of exposure length, cortical and trabecular bone contact areas on primary stability of infrazygomatic crest mini-screws at different insertion angles.BMC oral health · 2024Article
- The Orthodontic Mini-Implants Failures Based on Patient Outcomes: Systematic Review.European journal of dentistry · 2024Article
- Article
- Evaluation of bone thickness at infra-zygomatic crest region compared with cervical vertebrae maturation index.Bioinformation · 2024Article
- Temporary Anchorage Devices.Cureus · 2023Review
- Should Cone-Beam Computed Tomography Be Performed Prior to Orthodontic Miniscrew Placement in the Infrazygomatic Crest Area?-A Systematic Review.Biomedicines · 2023Review
- Mechanical strength of stainless steel and titanium alloy mini-implants with different diameters: an experimental laboratory study.Progress in orthodontics · 2021Article
- Treatment of bimaxillary protrusion using intra- and extra-alveolar miniscrews associated to self-ligating brackets system.Dental press journal of orthodonticsArticle
- Failure rates and factors associated with infrazygomatic crestal orthodontic implants - A prospective study.Journal of oral biology and craniofacial researchArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo compare failure rates for stainless steel (SS) and titanium alloy (TiA) bone screws (BSs) placed in the infrazygomatic crest (IZC). MATERIALS AND
methodsA total of 386 consecutive patients (76 male, 310 female; mean age 24.3 years, range 10.3-59.4 years) received IZC BSs (SS or TiA) via a double-blind, split-mouth design. BSs penetrated attached gingiva (AG) or moveable mucosa (MM) with 5 mm of soft tissue clearance. All BSs were immediately loaded and reactivated monthly with ≤14 oz (397 g or 389 cN) applied directly to the upper archwire bilaterally for 6 months to retract the maxilla to correct Class II or bimaxillary protrusion.
resultsOf the 772 devices, there were 49 (6.3%) failures: 27 SS (7.0%) and 22 TiA (5.7%). The 1.3% difference was not statistically significant ( P = .07). There was no significant relationship between SS or TiA failures relative to (1) right vs left side, (2) unilateral vs bilateral, or (3) age at failure. Significantly ( P < .05) increased failure rates were noted for SS screws in only two subgroups: AG site (7.4%) and right side (7.8%). Unilateral failure occurred in 21 patients (5.4%), and bilateral failures occurred in 14 of the total 772 patients (1.8%).
conclusionsThe overall success rate of 93.7% indicates that both SS and TiA are clinically acceptable for IZC BSs.
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Registered trials
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.