Tooth diameters and arch perimeters in a black and a white population

Merz, Mary Lynn; Isaacson, Robert J.; Germane, Nicholas; Rubenstein, Loretta K.

doi:10.1016/0889-5406(91)70049-3

Cited by 95 publications

(88 citation statements)

References 10 publications

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“…-All were whites living in the US Midsouth to reduce variation. 15,16 -No patient had a branchial arch syndrome, facial cleft, or any other condition known to enhance the risk of asymmetry.…”

Section: Methodsmentioning

confidence: 99%

Bilateral Asymmetry in the Tooth Relationships of Orthodontic Patients

Harris

Bodford

2007

The Angle Orthodontist

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Objective: To quantify the nature and extent of bilateral dentoalveolar asymmetries in routine adolescent orthodontic patients. Materials and Methods: Eight left-right pairs of occlusal dimensions were measured from dental casts (n ϭ 211 subjects) with proportionate samples of class I, II, and III malocclusions. Results: Directional asymmetry is a subtle, but pervasive feature of the dental arches, with systematically larger dimensions on the left side. Prior studies attribute this sidedness to compensations for hemispheric laterality. Patient's sex did not influence the magnitude of asymmetry, but patients with class II malocclusion exhibited significantly greater asymmetries, particularly in the anterior segment. Inspection suggests that this is attributable to the lack of coupling and guidance of the teeth between the jaws. There is a significant association between the severity of class II buccal-segment relationship and the extent of left-right asymmetries. Conclusion: Clinically, these lateralities need to be anticipated, particularly in class II malocclusions, and incorporated into the treatment plan.

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Section: Methodsmentioning

confidence: 99%

Bilateral Asymmetry in the Tooth Relationships of Orthodontic Patients

Harris

Bodford

2007

The Angle Orthodontist

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“…[24][25][26][27][28] Most of these studies have analyzed the dental arch by employing two-dimensional (2D) methods. [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] The reference points used for the measurements in these studies were incisal edges and cusp tips 17,19,[24][25][26][27][28] or indirect clinical bracket points derived from the contact points. 18,20,23 However, these landmarks do not represent the clinical archwire forms.…”

Section: Introductionmentioning

confidence: 99%

“…[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. [24][25][26][27][28] Most of these studies have analyzed the dental arch by employing two-dimensional (2D) methods.…”

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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“…In food bolus transport, a food bolus on the occlusal surface of the mandibular molars is very stable and easily crushed by occlusion with the antagonists. The mandibular first molar has the largest coronal diameter among teeth, both mesiodistally and buccolingually, [10][11][12][13][14] which makes it easier for the tongue to carry a food bolus on the occlusal surface as compared with those of the incisors and premolars. 15 The mandibular first molar is located anterior to the second molar, which makes the tongue smoothly carry a food bolus onto the surface.…”

Section: Discussionmentioning

confidence: 99%

The main occluding area in normal occlusion and mandibular prognathism

Kanzaki

Tokiwa

et al. 2015

The Angle Orthodontist

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Objective: To clarify whether the concept of main occluding area, where hard food is initially crushed, exists in patients who have a jaw deformity. Materials and Methods: Nineteen subjects with normal occlusion, 18 patients with mandibular prognathism, and 11 patients with mandibular prognathism who had undergone orthognathic surgery participated in this study. The main occluding area was identified by clenching Temporary Stopping. The coincidence, location of the main occluding area, and distance from the first molars to main occluding area were examined. Results: High coincidence of the main occluding area was obtained in all groups, signifying that the main occluding area exists even in these patients. Mandibular main occluding area was located on the first molar in all groups. Maxillary main occluding area in subjects with normal occlusion was located on the first molar. However, it was located on the second premolar and first molar in patients with mandibular prognathism, and on the first and second molars in patients with mandibular prognathism who had undergone orthognathic surgery. There was a statistically significant difference in distance from the maxillary first molar to the main occluding area among groups, but there was no difference in the distance from the mandibular first molar among groups. Conclusion: The main occluding area is more stable on the mandibular first molar than the maxilla in all groups. (Angle Orthod. 2016;86:87-93.)

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Tooth diameters and arch perimeters in a black and a white population

Cited by 95 publications

References 10 publications

Bilateral Asymmetry in the Tooth Relationships of Orthodontic Patients

Bilateral Asymmetry in the Tooth Relationships of Orthodontic Patients

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

The main occluding area in normal occlusion and mandibular prognathism

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