Comparison of dental and apical base arch forms in Class II Division 1 and Class I malocclusions

Ball, Randy L.; Miner, R. Matthew; Will, Leslie A.; Arai, Kazuhito

doi:10.1016/j.ajodo.2008.11.026

Cited by 53 publications

(39 citation statements)

References 12 publications

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“…4,5,8,9 Andrews 10 has defined the term WALA ridge, which was considered to be the band of keratinized soft tissue directly adjacent to the mucogingival junction. Researchers 9,11,12 have identified that there was significant relationship between the dental arch form and the WALA curve both in Class I occlusion and Class II division 1 malocclusion.…”

Section: Introductionmentioning

confidence: 99%

Comparison of arch width, alveolar width and buccolingual inclination of teeth between Class II division 1 malocclusion and Class I occlusion

Shu

Han

Wang

et al. 2012

The Angle Orthodontist

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Section: Introductionmentioning

confidence: 99%

Comparison of arch width, alveolar width and buccolingual inclination of teeth between Class II division 1 malocclusion and Class I occlusion

Shu

Han

Wang

et al. 2012

The Angle Orthodontist

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“…They found that the anterior and posterior overjets were homogeneous. In recent times, several studies [14][15][16] have evaluated the relationship between the dental and basal arches on the basis of the WALA ridge (named after Will Andrews and Larry Andrews), which connects the most convex points on the mucogingival junction. 13 However, none of these studies analyzed the maxillary arch, and therefore, the horizontal relationship between the upper and lower dentition has not yet been assessed.…”

Section: Introductionmentioning

confidence: 99%

“…Previous reports have stressed the importance of the coordination between the upper and lower arches and claimed that the absence of this coordination may lead to functional and esthetic problems. [9][10][11][12] Few studies have been performed on the shape of the basal arch, [13][14][15][16] whereas several studies have examined the characteristics of the dental arch form in different ethnic groups. [17][18][19][20][21][22][23] Some previous studies were aimed at finding mathematical relations to describe the dental arch.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional evaluation of the relationship between dental and basal arch forms in normal occlusion

et al. 2011

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Objective:The purposes of this study were to evaluate the relationship between the dental and basal arch forms; to analyze their differences in the tapered, ovoid, and square arch forms in normal occlusion by using three-dimensional (3D) virtual models; and to test the hypothesis that the overjet and maxillomandibular basal arch width difference have a significantly positive correlation. Methods: Seventy-seven normal occlusion plaster casts were examined by 3D scanning. Facial axis (FA) and WALA points were digitized using the Rapidform 2006 software. The dimensions of the dental and basal arches and the overjet were measured. The samples were classified into 3 groups according to arch forms: tapered (n = 20), ovoid (n = 20), and square (n = 37). Analysis of variance (ANOVA) was used to compare the dental and basal arch dimensions. The Pearson correlation coefficients between the intercanine as well as the intermolar widths at the FA and WALA points were calculated. Results: With regard to the basal arch dimensions, the tapered arch form showed a larger mandibular intermolar depth than the ovoid. Strong correlations were noted between the basal and dental intermolar widths in both the upper and lower arches (r = 0.83 and 0.85, respectively). Moderate correlation was found between the upper and lower intercanine widths (r = 0.65 and 0.48, respectively). Conclusions: The 3 dental arch form groups differed only in some dimensions of the skeletal arch. Moderate correlations were found between the basal and dental intercanine widths. These findings suggest that the basal arch may not be a principle factor in determining the dental arch form. (Korean J Orthod 2011;41(4):288-296)

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“…The landmarks are an estimation of maxillary and mandibular basal bone 23 and the anteroposterior measurement uses natural head position as a reference line, which is less influenced by external variables 18,24 and provides a more stable reference for calculating skeletal discrepancies.…”

Section: Discussionmentioning

confidence: 99%

Newly defined landmarks for a three-dimensionally based cephalometric analysis:A retrospective cone-beam computed tomography scan review

Lee

Kanavakis

Miner

2015

The Angle Orthodontist

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Objectives: To identify two novel three-dimensional (3D) cephalometric landmarks and create a novel three-dimensionally based anteroposterior skeletal measurement that can be compared with traditional two-dimensional (2D) cephalometric measurements in patients with Class I and Class II skeletal patterns. Materials and Methods: Full head cone-beam computed tomography (CBCT) scans of 100 patients with all first molars in occlusion were obtained from a private practice. InvivoDental 3D (version 5.1.6, Anatomage, San Jose, Calif) was used to analyze the CBCT scans in the sagittal and axial planes to create new landmarks and a linear 3D analysis (M measurement) based on maxillary and mandibular centroids. Independent samples t-test was used to compare the mean M measurement to traditional 2D cephalometric measurements, ANB and APDI. Interexaminer and intraexaminer reliability were evaluated using 2D and 3D scatterplots. Results: The M measurement, ANB, and APDI could statistically differentiate between patients with Class I and Class II skeletal patterns (P , .001). The M measurement exhibited a correlation coefficient (r) of 20.79 and 0.88 with APDI and ANB, respectively. Conclusions: The overall centroid landmarks and the M measurement combine 2D and 3D methods of imaging; the measurement itself can distinguish between patients with Class I and Class II skeletal patterns and can serve as a potential substitute for ANB and APDI. The new threedimensionally based landmarks and measurements are reliable, and there is great potential for future use of 3D analyses for diagnosis and research. (Angle Orthod. 2015;85:3-10.)

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Comparison of dental and apical base arch forms in Class II Division 1 and Class I malocclusions

Cited by 53 publications

References 12 publications

Comparison of arch width, alveolar width and buccolingual inclination of teeth between Class II division 1 malocclusion and Class I occlusion

Comparison of arch width, alveolar width and buccolingual inclination of teeth between Class II division 1 malocclusion and Class I occlusion

Three-dimensional evaluation of the relationship between dental and basal arch forms in normal occlusion

Newly defined landmarks for a three-dimensionally based cephalometric analysis:A retrospective cone-beam computed tomography scan review

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