Changes of mandibular dental arch shape during adolescence and its influence on late mandibular incisor crowding

Žigante, Martina; Pavlić, Andrej; Radunović, Vaska Vandevska; Mathewson, Alana; Knežević, Anica Horvat; Špalj, Stjepan

doi:10.1127/homo/2019/1070

Cited by 6 publications

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“…The investigation by Howe et al compared crowded and non-crowded groups using study models and concluded that arch dimensions had a greater contribution to dental crowding than the tooth size (28). In a similar age group, Al-Joubori and Alhuwaizi showed that individuals with crowding had narrower mandibular ICW than those without crowding among Angle's Class I (29). The present study obtained similar results to the abovementioned studies and determined that ICW was shorter in individuals with dental crowding.…”

Section: Discussionsupporting

confidence: 85%

An evaluation of the relationship between periocular anthropometric measurements and mandibular incisor crowding

Eliacik

2021

Int Dent Res

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Aim: To determine whether a relationship exists between the periocular anthropometric meas-urements (POAM), intercanine width, and Little’s irregularity index (measures the crowding of mandibular incisors) in the Turkish population. Methodology: Ninety-four children (49 with mandibular crowding and 45 controls) aged between 12-18 years were included in this study. Inter-outer canthal distance (IOCD), in-ter-inner canthal distance (IICD), interpupillary distance (IPD), inter-canine width (ICW), and Littles’irregularity index (LII) of subjects were measured from two standardized digital pho-tographs using a public domain Java processing program (ImageJ software). Spearman correla-tion coefficient and multiple linear regression tests were used to investigate the relationship between POAM, and ICW, and LII. Results: In the mandibular crowding group, the means of IICD, OICD, IPD, and ICW were 30.6 ± 1.7 mm, 82.4 ± 2.0 mm, 59.2 ± 1.6 mm, 23.3 ± 1.1 mm, respectively. In controls, the mean of the measurements was found to be 32.1 ± 1.5 mm, 84.4 ± 2.4 mm, 60.1 ± 1.9 mm, 24.6 ± 1.4 mm, respectively. There were statistically significant differences between groups among all variables (p <0.001). There was a negative correlation between POAM and ICW with LDI. Especially, high correlation was found in ICW and IICD variables (r = -. 732, p <.001 and r = -705, p <.001, respectively). As a result of multivariate regression analysis, IICD and ICW were found to be affected the crowding negatively and significantly (p = .003 and p = .026, respectively). Conclusion: According to the results obtained from our study, it was concluded that IICD which remains stable after the age of 10 years and ICW can be used to predict irregularities in mandibular incisors in children in the Turkish population. How to cite this article: Kızıltan Eliaçık BB. An evaluation of the relationship between periocular anthropometric measurements and mandibular incisor crowding. Int Dent Res 2021;11(Suppl.1):216-221. https://doi.org/10.5577/intdentres.2021.vol11.suppl1.31 Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

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Section: Discussionsupporting

confidence: 85%

An evaluation of the relationship between periocular anthropometric measurements and mandibular incisor crowding

Eliacik

2021

Int Dent Res

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“…This study was created under the project grants UNIRI BIOMED 18- 22…”

Section: Acknowledgementsmentioning

confidence: 99%

“…Increase in mandibular incisor crowding was reported to occur between 13 and 26 years, in the late adolescence and early adulthood [21,22]. It often coincides with the eruption of mandibular third molars, which might imply their causal role.…”

Section: Introductionmentioning

confidence: 99%

Presence and Maturation Dynamics of Mandibular Third Molars and Their Influence on Late Mandibular Incisor Crowding: Longitudinal Study

Žigante

Pavlić

Morelato

et al. 2021

Preprint

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OBJECTIVE: To investigate the relationship between the presence and dynamics of mandibular third molar development and the occurrence and amount of late mandibular incisor crowding. MATERIALS AND METHODS: Dental plaster casts and panoramic radiographs of 72 orthodontically untreated subjects from the Nittedal growth study, Norway were analysed. The subjects were recalled for check-up at 12, 15, 18 and 21 years of age. Mandibular incisor crowding was assessed using the Little’s irregularity index and dental maturation of the third molars by the Cameriere’s index.RESULTS: The majority of the subjects (64%) had ≥1mm increase in irregularity; 22% experienced increase of 0.1-0.9mm and 14% had unchanged or decreased irregularity. Incisor irregularity increased with age, regardless of absence or presence of third molars. The amount of change in incisor irregularity from 12 to 21 years did not differ significantly between subjects with hypodontia of third molars, extraction and those with third molars present. No differences were observed between erupted, unerupted or impacted third molars. No correlation was found between the amount of change in irregularity and maturation of the third molars.CONCLUSIONS: Occurrence and amount of mandibular late incisor crowding is not significantly influenced by presence or development dynamics of mandibular third molars.

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“…An increase in mandibular incisor crowding was reported to occur between 13 and 26 years, in late adolescence and early adulthood [ 21 , 22 ]. It often coincides with the eruption of mandibular third molars, which might imply their causal role.…”

Section: Introductionmentioning

confidence: 99%

Presence and Maturation Dynamics of Mandibular Third Molars and Their Influence on Late Mandibular Incisor Crowding: A Longitudinal Study

Žigante

Pavlić

Morelato

et al. 2021

IJERPH

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The objective of this study was to investigate the relationship between the absence, presence and dynamics of mandibular third molar development and the occurrence and amount of late mandibular incisor crowding. Dental plaster casts and panoramic radiographs of 72 orthodontically untreated subjects from the Nittedal growth study, Norway were analyzed. The subjects were recalled for a checkup at 12, 15, 18 and 21 years of age. Mandibular incisor crowding was assessed using Little’s irregularity index and dental maturation of the third molars by the Cameriere’s index. The majority of the subjects (64%) had ≥1 mm increase in irregularity; 22% experienced an increase of 0.1–0.9 mm and 14% had unchanged or decreased irregularity. Incisor irregularity increased with age, regardless of absence or presence of third molars. The amount of change in incisor irregularity from 12 to 21 years did not differ significantly between subjects with hypodontia of third molars, extraction and those with third molars present. No differences were observed between erupted, unerupted or impacted third molars. No correlation was found between the amount of change in irregularity and maturation of the third molars. In conclusion, occurrence and amount of mandibular late incisor crowding is not significantly influenced by the presence of mandibular third molars or their development dynamics.

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Changes of mandibular dental arch shape during adolescence and its influence on late mandibular incisor crowding

Cited by 6 publications

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An evaluation of the relationship between periocular anthropometric measurements and mandibular incisor crowding

An evaluation of the relationship between periocular anthropometric measurements and mandibular incisor crowding

Presence and Maturation Dynamics of Mandibular Third Molars and Their Influence on Late Mandibular Incisor Crowding: Longitudinal Study

Presence and Maturation Dynamics of Mandibular Third Molars and Their Influence on Late Mandibular Incisor Crowding: A Longitudinal Study

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