A detailed radiomorphometric analysis of the mandibular foramen, lingula and anti-lingula with a special emphasis on mandibular prognathism

Sinanoğlu, Alper; Seki, Umut; Tokuç, Berkay

doi:10.1016/j.jormas.2022.08.003

Cited by 3 publications

(3 citation statements)

References 23 publications

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“…CBCT investigations have proven helpful in studying the ML, offering improved visualization and precise anatomical assessments. [12][13][14]17,[22][23][24] Nevertheless, the results remain controversial, particularly concerning the correlation between genders, angle Even though some studies reported no significant differences between male and female patients, 14,22 our results were consistent with other studies, which have detected such differences and indicated relatively more minor mandibles and, consequently, smaller measurements of the mandibular lingula (ML) in women. The controversy among studies stems from several factors, including participant age, race variations and the reference planes employed for measurements.…”

Section: Ta B L E 3 (Continued)supporting

confidence: 88%

“…CBCT investigations have proven helpful in studying the ML, offering improved visualization and precise anatomical assessments 12–14,17,22–24 . Nevertheless, the results remain controversial, particularly concerning the correlation between genders, angle classifications and growth patterns.…”

Section: Discussionmentioning

confidence: 99%

“…[10][11][12][13][14]17,18 The findings in this field have been controversial due to variations in the evaluation techniques employed and the need for consistent reference planes defined in these studies. 2,4,13,17,[19][20][21][22][23][24][25] These controversies include not only the absolute values of the measurements regarding the ML reference point, but also the correlation between factors such as gender, angle classification and growth pattern on the ML position.…”

Section: Introductionmentioning

confidence: 99%

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Three‐dimensional evaluation of mandibular lingula: Comparisons of skeletal angle classifications and growth patterns

Sayahpour,

Nucci,

Eslami

et al. 2024

Orthod Craniofacial Res

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ObjectivesThis study aimed to evaluate the position of the mandibular lingula (ML) in adult patients (aged between 18 and 35 years old) with different skeletal and growth patterns using cone‐beam computed tomography (CBCT).DesignCross‐sectional.SettingDentistry department of University.SubjectsSubjects comprised CBCT images of 150 adult patients, including 300 rami.Methods and MaterialsIn total, 150 CBCT aged between 18 and 35 were selected and divided into three main groups of 50 samples based on their skeletal relationships (classes I, II and III). Patients were subdivided based on their growth pattern (vertical vs. horizontal), resulting in 25 samples per subgroup. Distances between the mandibular lingula and occlusal plane (ML‐OP), sigmoid notch (ML‐SN), external oblique ridge (ML‐EOR), internal oblique ridge (ML‐IOR), posterior border of the ramus (ML‐PBR), inferior border of the ramus (ML‐IBR), and horizontal and vertical distances to the mandibular foramen (ML‐hMF and ML‐vMF). One‐way ANOVA variance analysis was employed to compare different angle classifications, and Bonferroni analysis was used for multiple comparisons. The Student's t‐test was also used to compare growth patterns within each main group and genders within the subgroup.ResultsThe study revealed statistically significant differences in the position of the mandibular lingula between different angle classifications, growth patterns, and genders. Class II samples showed a more anterior position of the ML, whereas Class III samples displayed a more posterior position of the ML. Patients with horizontal growth patterns and Angle Class III had a more posteriorly positioned ML. Gender differences were observed, particularly in Class I and Class III classifications, suggesting that gender may influence the variability of ML position in these specific classifications.ConclusionThe position of the mandibular lingula showed high variability among individuals with different angle classifications, growth patterns and genders.

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Section: Ta B L E 3 (Continued)supporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Three‐dimensional evaluation of mandibular lingula: Comparisons of skeletal angle classifications and growth patterns

Sayahpour,

Nucci,

Eslami

et al. 2024

Orthod Craniofacial Res

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Determining the safety margin of mandibular lingula in sagittal split ramus osteotomy

Tekin,

Kose,

Ugurlu

et al. 2024

Surg Radiol Anat

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Determining the position of the lingula and the mandibular foramen using the antilingula in orthognathic surgery

Vorakulpipat,

Arayapisit,

Topothai

et al. 2024

BMC Oral Health

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Background The antilingula located on the lateral surface of the mandibular ramus has been served as a surgical landmark for the mandibular foramen on the medial surface for decades. However, whether the antilingula truly represents the lingula which is the bony prominence overlapping the mandibular foramen, or the foramen itself, is still unclear. This study thus aimed to examine the position of the antilingula in relation to three reference points: the lingula, the anterior and the posterior borders of the mandibular foramen, as well as to the reference plane used in the inferior alveolar nerve block, and to the posterior border of the mandible. Methods This observational study was performed in 113 Thai dry mandibles. The antilingula were identified followed by transferring the reference points to the lateral surface. The distances from the antilingula to the reference points, the reference plane and the posterior border of the ramus were then measured. Chi-square test was calculated for side-dependency of the antilingula. Paired t-test was calculated for difference in measurements in left and right sides. Results The antilingula could be identified in 92.48% of the mandibles with 86.67 – 90.00% accuracy and 86.67% reliability. There was no significant difference in the presence of the antilingula on left and right sides (p = 0.801). Only 2.5% and 0.83% of the antilingula correspond to the lingula and the anterior border of the mandibular foramen, respectively. However, 85% of the reference points were located within 11 mm radius. The antilingula was found located 2.80 mm inferior to the reference plane and 16.84 mm from the posterior border of the ramus. Conclusions The antilingula does not concur with the reference points on the medial surface. Our study also suggests that the safe area for vertical osteotomy is 11 mm posterior to the antilingula or at 30% of the length from the posterior border parallel to the occlusal plane. The use of more accurate techniques in localizing the mandibular foramen combined with the antilingula is more recommended than using the antilingula as a sole surgical guide.

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A detailed radiomorphometric analysis of the mandibular foramen, lingula and anti-lingula with a special emphasis on mandibular prognathism

Cited by 3 publications

References 23 publications

Three‐dimensional evaluation of mandibular lingula: Comparisons of skeletal angle classifications and growth patterns

Three‐dimensional evaluation of mandibular lingula: Comparisons of skeletal angle classifications and growth patterns

Determining the safety margin of mandibular lingula in sagittal split ramus osteotomy

Determining the position of the lingula and the mandibular foramen using the antilingula in orthognathic surgery

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