Comparison of arch forms between Israeli and North American white populations

Gafni, Yossi; Tzur-Gadassi, Liat; Nojima, Kumie; McLaughlin, Richard P.; Abed, Yossi; Redlich, Meir

doi:10.1016/j.ajodo.2009.03.047

Cited by 34 publications

(34 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A previously published 13.1 (4.1e23.6) 12.6 (4.1e23.6) 14.7 (7.3e23.6) 12.9 (7.1e19.8) Concavity depth (mm) 3.7 (0.7e10.1) Concavity angle ( ) 53.9 (22.0e75.8) (Chan et al, 2011a;Watanabe et al, 2010). Variations of the facial morphology between different ethnic groups have been described in various studies (Bayome et al, 2011;Gafni et al, 2011;Lee et al, 2013). In the canine and first premolar region, a lingual undercut was found only in 14.4% of all cross-sections analyzed.…”

Section: Discussionmentioning

confidence: 93%

Lingual concavities in the mandible: A morphological study using cross-sectional analysis determined by CBCT

Nickenig

Wichmann

Eitner

et al. 2015

Journal of Cranio-Maxillofacial Surgery

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 93%

Lingual concavities in the mandible: A morphological study using cross-sectional analysis determined by CBCT

Nickenig

Wichmann

Eitner

et al. 2015

Journal of Cranio-Maxillofacial Surgery

View full text Add to dashboard Cite

“…Previous studies demonstrated that the most common arch form is tapered in Caucasians (43.8%), square in Korean and Japanese people (46.7% and 45.6%, respectively), and ovoid in Israeli people (50.7%) 8,9,15. Meanwhile, Bayome et al12 reported an even distribution of the arch forms in Egyptians.…”

Section: Discussionmentioning

confidence: 96%

Comparison of mandibular arch forms of Korean and Vietnamese patients by using facial axis points on three-dimensional models

et al. 2013

View full text Add to dashboard Cite

ObjectiveThis study was aimed at comparing the mandibular arch forms of Korean and Vietnamese patients by using facial axis (FA) points on three-dimensional (3D) models.MethodsMandibular casts of 68 Korean (Class I malocclusion, 30; Class II malocclusion, 38) and 78 Vietnamese (Class I malocclusion, 41; Class II malocclusion, 37) patients were scanned in their occluded positions and grouped according to arch form (tapered, ovoid, and square). The FA point of each tooth was digitized on the 3D mandibular models. The measurements and frequency distributions of the arch forms were compared between the ethnic groups.ResultsThe Vietnamese patients had significantly greater intercanine depth and intercanine and intermolar width-to-depth ratios than the Korean patients (p < 0.05). The frequency distributions of the arch forms were also significantly different (p = 0.038), but no sexual dimorphism was found.ConclusionsVietnamese people tend to have deeper and wider arches than Korean people. The three arch forms are evenly distributed in Korean people, but Vietnamese people frequently have square arches. Clinicians should identify the correct arch form of an ethnic group before initiating orthodontic treatment.

show abstract

“…Dental arch dimensions differ with age, gender and ethnicity, so ideally future studies should investigate dental anatomy, alignment of the teeth and the presence of undercuts as possible influencing factors on MG retention. This study did not consider the effect of anatomical differences within the dental arches as only one master cast with no irregular teeth was examined.…”

Section: Discussionmentioning

confidence: 99%

“…If a MG is poorly fitted and not retentive, an athlete will try to keep it in position, which could cause distraction, speech and breathing impedances; consequently having a negative effect on performance. In addition, Del Rossi et al 7 suggested that MGs with better fit might limit the clenching forces naturally applied by an individual to keep a loose MG in position, thereby prolonging the life of the device.Dental arch dimensions differ with age, gender and ethnicity,[23][24][25] so ideally future studies should investigate dental anatomy, alignment of the teeth and the presence of undercuts as possible influencing factors on MG retention. This study did not consider the effect of anatomical differences within the dental arches as only one master cast with no irregular teeth was examined.…”

mentioning

confidence: 99%

Effect of mouthguard design on retention and potential issues arising with usability in sport

Karaganeva

Pinner

Tomlinson

et al. 2018

Dental Traumatology

View full text Add to dashboard Cite

Background/Aims Mouthguard retention could potentially increase an athlete's motivation to wear the device, due to potential improvements in physical comfort. The aim of this study was to examine the retentive properties of selected customised mouthguard designs, during normal conditions (dry) and within the presence of artificial saliva (wet). Additionally, the correlation between thickness and retention was investigated. Material and Methods Six different custom mouthguard designs (MG1‐MG6) reported in previous studies, were pressure‐formed with 2 and 4 mm blanks accordingly. Thickness was measured 10 times at seven anatomical points and the mean (±SD) was recorded. A novel rig was fabricated to connect the mouthguards to a Hounsfield H10KS Tensometer, which was used to fully displace each device from the model at a constant rate of 50 mm/min. The test was repeated under both dry and wet conditions. Results Retention forces recorded at the anterior region demonstrated higher measurements under wet conditions than dry (P < 0.001). The total retention of the mouthguards was influenced by alterations in their design. Trend analysis indicated that 64% of MG retention could be explained by their thickness under dry conditions and 55% when wet. Conclusions Design and thickness of mouthguards are key factors in retention. Mouthguard fabrication techniques should be considered in order to minimize dislodgment of the devices as well as potentially increasing the wearability of mouthguards during sport.

show abstract

Comparison of arch forms between Israeli and North American white populations

Abstract: Our results suggest that, when treating Israeli patients, one should expect to use the preformed ovoid arch form orthodontic wires in a significant percentage of patients.

Cited by 34 publications

References 15 publications

Lingual concavities in the mandible: A morphological study using cross-sectional analysis determined by CBCT

Lingual concavities in the mandible: A morphological study using cross-sectional analysis determined by CBCT

Comparison of mandibular arch forms of Korean and Vietnamese patients by using facial axis points on three-dimensional models

Effect of mouthguard design on retention and potential issues arising with usability in sport

Contact Info

Product

Resources

About