Stand der Pubertätsentwicklung bei Kindern und Jugendlichen während der kieferorthopädischen Therapie

Hoffmann, Julia; Krey, Karl-Friedrich; Hirsch, Christian R

doi:10.1007/s00056-013-0145-0

Cited by 5 publications

(4 citation statements)

References 24 publications

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“…Growth references also showed a connection between increase in height and earlier timing of pubertal growth spurt (30). Our findings may be partly explained by differences in pubertal status while undergoing orthodontic treatment (31). It has also been shown that tooth eruption in females is more advanced compared to males (32).…”

Section: Mesiopalatal Rotation Of Upper First Molars Has Been Reportesupporting

confidence: 63%

Dental arch effects after early and later timed cervical headgear treatment—a randomized controlled trial

Hannula

Pirilä-Parkkinen

Tolvanen

et al. 2019

European Journal of Orthodontics

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Summary Background Cervical headgear (CH) is a commonly used orthodontic appliance and its dentoalveolar changes are known. However, the effects related to gender and timing have gained less attention. Objectives To examine dimensions of dental arches among children with Class II occlusion without posterior mandibular rotation according to timing of Kloehn-type CH treatment. Trial design Prospective, randomized, parallel-group controlled trial. Methods Sixty-seven seven-year-old children with a Class II occlusion were included in the study. The children were randomized into two equal-size groups in 1:1 ratio by sealed-envelope randomization. The early group (EG, n = 33) was treated between T0 and T1 (26 months), right after eruption of the first maxillary molars. The late group (LG, n = 34) was treated between T1 and T2 (24 months). The children were treated with CH until normal Class I occlusion on first molars was achieved. Impressions for dental casts were taken from all participants at T0, T1, and T2. Blinding was applicable for outcome assessors. Changes in dental cast measurements were compared between the groups and genders using t-test, Mann-Whitney U-test, and repeated measures analysis of variance. Results Of the children, 56 completed the study. The maxillary arch length and the transversal changes between the upper canines and upper first molars were significantly increased in EG at T0−T1 (P < 0.001). At T2, the transversal dimension between the upper first molars was larger (P < 0.05), and in the lower arch the mandibular arch length (P < 0.05) and the transversal dimension between the lower first molars (P < 0.01) were increased in EG males compared to LG males. No harms were encountered. Conclusions The male gender benefits most from early timing of the CH treatment, showing larger dimensions at the end of the follow-up. The results clearly indicated a wider and longer upper dental arch and spontaneous expansion of the lower dental arch after treatment. Clinical Registration NCT02010346.

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Section: Mesiopalatal Rotation Of Upper First Molars Has Been Reportesupporting

confidence: 63%

Dental arch effects after early and later timed cervical headgear treatment—a randomized controlled trial

Hannula

Pirilä-Parkkinen

Tolvanen

et al. 2019

European Journal of Orthodontics

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“…When the treatment effect was compared between the genders, a larger effect was seen in boys. One possible explanation for this could be that boys and girls were in a different maturation phase [ 18 ]. When maximal space gain is the goal of the headgear treatment, early onset of treatment could be beneficial, especially before eruption of the second molars.…”

Section: Discussionmentioning

confidence: 99%

Effect of cervical headgear on dental arch area, shape and interarch dimensions

et al. 2020

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Purpose The goal was to study the effects of early cervical headgear treatment on maxillary and mandibular dental arch area, shape and interarch dimensions. Methods The total study group comprised 67 children aged 7.6 years (standard deviation 0.3) with Angle class II malocclusion collected between 1992 and 1996. The children were randomly divided into two groups of equal size. In the first group, cervical headgear treatment was started immediately and undertaken for 2 years. The remaining patients served as untreated controls. Dental casts were taken and scanned at the beginning of treatment (T0) and at the 2‑year (T1) and 4‑year follow-up (T2). Three-dimensional landmarks describing the positions of maxillary and mandibular incisors, canines, first and second premolars and first molars were used to calculate and visualize the maxillary and mandibular dental arch area and shape using the polynomial equation y = Ax6 + Bx2. Results Significant changes in the shape and area of both maxillary and mandibular dental arches were induced with cervical headgear. The headgear increased dental arch area, sagittal dimensions at the mid-sagittal line and transversal dimensions at all of the measured levels in both dental arches compared to the control group. Conclusions Cervical headgear is an effective treatment device to gain space in both dental arches. Furthermore, when used as an early phase treatment, relapse is relatively small compared to the gained space.

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“…Interestingly, it was recently found that irrespective of gender, most subjects undergoing orthodontic treatment in Germany were 12-13 years old [21]. At this age, 60% of the girls and only 38% of the boys had already attained advanced stages of pubertal development.…”

Section: Discussionmentioning

confidence: 99%

Secular Trends in Age at Onset of Orthodontic Treatment in Adolescents

Shafir¹,

Israel²

2019

J Dental Sci Res Rev Rep

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Introduction: It was previously found that age of sexual maturity during the last two decades has declined. The purpose of this study was to investigate whether chronologic age, dental age and skeletal developmental stage at onset of orthodontic treatment have changed during the last few decades in the same manner. In addition, to find out whether correlations exist between these ages. Such changes might have implications on clinical orthodontic practice. Methods: Panoramic and lateral cephalometric radiographs of 300 adolescents (139 males, 161 females) who began their orthodontic treatment during the years 1990-1992 or 2010-2012 (152 and 148 subjects, respectively) were examined. Chronologic, dental and skeletal ages were determined and compared between the two groups and correlations between these ages were calculated. Results: Mean chronologic age was 12.26 ± 1.22 years during 1990-1992 and 12.63 ± 1.64 during 2010-2012 (p=0.028). Mean dental age was 12.27 years ± 1.88 during 1990-1992 and 13.02 ± 2.20 during 2010-2012 (p=0.002). Mean skeletal developmental stage of subjects was 2.68 ± 1.60 during 1990-1992 and 2.99 ± 1.75 during 2010-2012 (p>0.1). Significant correlations were found between chronologic, dental and skeletal ages. Conclusions: Although no significant change of skeletal developmental stage upon commencing orthodontic treatment has occurred over the last two decades, both chronologic and dental ages have increased, particularly for females. There is significant correlation between chronologic, dental and skeletal ages for the entire group, particularly for females.

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Stand der Pubertätsentwicklung bei Kindern und Jugendlichen während der kieferorthopädischen Therapie

Cited by 5 publications

References 24 publications

Dental arch effects after early and later timed cervical headgear treatment—a randomized controlled trial

Dental arch effects after early and later timed cervical headgear treatment—a randomized controlled trial

Effect of cervical headgear on dental arch area, shape and interarch dimensions

Secular Trends in Age at Onset of Orthodontic Treatment in Adolescents

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