The reliability of Little's Irregularity Index for the upper dental arch using three dimensional (3D) digital models

Burns, Angus; Dowling, Adam H.; Garvey, Thérèse M.; Fleming, Garry J.P.

doi:10.1016/j.jdent.2014.07.012

Cited by 11 publications

(10 citation statements)

References 26 publications

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“…Differences from 12 studies 11,12,14,22,[24][25][26]29,32,34,35,38 (636 models) regarding space analysis, crowding, and irregularity index even statistically significant differences were not clinically significant except for arch perimeter 12 and available mandibular space. 38 Regarding arch length, differences between the techniques ranged from 0.0712 to 1.47 mm.…”

Section: Arch Length Crowding and Irregularity Indexmentioning

confidence: 75%

Diagnostic accuracy and measurement sensitivity of digital models for orthodontic purposes: A systematic review

Rossini

Parrini

Castroflorio

et al. 2016

American Journal of Orthodontics and Dentofacial Orthopedics

181

126

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Section: Arch Length Crowding and Irregularity Indexmentioning

confidence: 75%

Diagnostic accuracy and measurement sensitivity of digital models for orthodontic purposes: A systematic review

Rossini

Parrini

Castroflorio

et al. 2016

American Journal of Orthodontics and Dentofacial Orthopedics

181

126

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“…[4] The 3D study models can replace the physical study models to provide a good visualization of malocclusion and assess tooth material arch length discrepancy, interarch relationship, tooth dimensions, arch forms, and dimensions. [567891011] The 3D models may also be used for diagnostic setup and superimposition to compare the treatment results. The orthodontists can print the physical models from the scanned models whenever required.…”

Section: Introductionmentioning

confidence: 99%

Comparison of reliability, validity, and accuracy of linear measurements made on pre- and posttreatment digital study models with conventional plaster study models

Verma¹,

Singh²,

Verma³

et al. 2019

J Orthodont Sci

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OBJECTIVES:To compare the accuracy of the linear measurements made on pre- and posttreatment three-dimensional (3D) scanned digital models with conventional plaster study models.MATERIALS AND METHODS:The study was conducted on pre- and posttreatment study models of 132 patients. A 3D model scanner was used to scan the plaster models to form 3D digital models. The measurements were made on the plaster models using digital Vernier calipers, and the 3D digital models were assessed for similar measurement using a software of the model scanner. The intraclass correlation for intraoperator error showed good correlations between the measurements made on conventional plaster models and digital models.RESULTS:Although the comparison of the linear measurements made by conventional and digital methods on both pre- and posttreatment study models using intraclass coefficient showed a good correlation, analysis of variance showed significant mean differences in the measurements of multiple variables in both the groups. The number of variables showing significant differences was more in the pretreatment group. The measurements obtained by Vernier calipers were generally higher than those of scanned pre- and posttreatment study models.CONCLUSION:The linear measurements made by conventional and digital methods showed statistically significant mean differences. The accuracy of recording can be affected by the severity of pretreatment malocclusion, but the deviations were not large enough to contradict the use of the digital models for orthodontic records.

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“…Six subjects without orthodontic treatment were appointed as the control group (3 males, 3 females, mean age 26.67 ± 6.83 years), which has the same criteria as the orthodontic patients group. The subjects were selected to participate in this study based on the following criteria: (1) Good general health and healthy periodontal tissue, with probing depths not exceeding 3 mm, (2) no sign of bone loss in panoramic radiograph, (3) no history of antibiotic therapy within the past 6 months, (4) not under anti-inflammatory drugs in the month preceding the start of the study, (5) Little's irregularity index 13 on maxillary anterior ranging from 4 to 9 mm, (6) nonextraction orthodontic treatment on the experimental group, and (7) never had previous orthodontic treatment.…”

Section: Subject Selectionmentioning

confidence: 99%

Osteoprotegerin Level Differences in Orthodontic Treatment with Self-ligating and Conventional Preadjusted Brackets at Early Aligning and Leveling Phase

Widayati¹,

Adiwirya²,

Soedarsono³

2018

World Journal of Dentistry

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Aim:This study aims to investigate the differences in osteoprotegerin (OPG) concentrations in early aligning and leveling of orthodontic treatments using self-ligating and conventional preadjusted brackets. Materials and methods:Three groups consisting of two experimental groups and one control group participated in this study. A total of 18 patients were selected according to the following inclusion criteria: Little's irregularity index on maxillary anterior teeth ranging from 4 to 9 mm, nonextraction orthodontic treatment on the experimental group, and no previous orthodontic treatment. The experimental group received orthodontic treatment with either a passive self-ligating or conventional preadjusted bracket system, while the control group did not receive orthodontic treatment. Gingival crevicular fluid (GCF) collection was done at baseline, 1, 24, and 168 hours on five points of maxillary anterior proximal sites, from the mesiolabial side of the canine to the mesiolabial side of its contralateral side. The OPG concentration was assessed by enzyme-linked immunoabsorbent assay (ELISA). Results:The OPG concentration on both bracket systems was decreased in a time-dependent manner. Decreasing concentration was maintained up until 168 hours on the selfligating bracket, while conventional preadjusted bracket showed significantly increasing concentration at 168 hours (p = 0.004). Levels of OPG were significantly lower on self-ligating bracket compared with the conventional bracket at 1, 24, and 168 hours (p < 0.005). Conclusion:Both bracket systems showed decreasing OPG concentration up to 24 hours after orthodontic activation. A maintained decreasing level of OPG was observed on the selfligating bracket group at 168 hours, and it showed significant lower OPG concentration compared with the conventional preadjusted bracket group at 1, 24, and 168 hours after initial force application. Clinical significance:The maintained decreasing level of OPG could indicate bone resorption that allows tooth movement into ORIGINAL RESEARCH correct alignment that still occurs on self-ligating bracket up to 168 hours after initial activation.

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The reliability of Little's Irregularity Index for the upper dental arch using three dimensional (3D) digital models

Cited by 11 publications

References 26 publications

Diagnostic accuracy and measurement sensitivity of digital models for orthodontic purposes: A systematic review

Diagnostic accuracy and measurement sensitivity of digital models for orthodontic purposes: A systematic review

Comparison of reliability, validity, and accuracy of linear measurements made on pre- and posttreatment digital study models with conventional plaster study models

Osteoprotegerin Level Differences in Orthodontic Treatment with Self-ligating and Conventional Preadjusted Brackets at Early Aligning and Leveling Phase

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