Cephalometric evaluation of facial types in preschool children without sleep-related breathing disorder

Kawashima, Shigeto; Peltomäki, Timo; Laine, Juhani; Rönning, Olli

doi:10.1016/s0165-5876(02)00003-4

Cited by 17 publications

(7 citation statements)

References 31 publications

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“…In addition, he suggested that (1) apparent airway obstruction, indicated by an opening of 5 mm or less in the upper pharyngeal measurement, could be used as an indicator of possible airway impairment, and (2) lower pharyngeal airway widths greater than 15 mm, due to habitual posture or the enlargement of tonsils, might cause anterior positioning of the tongue. 19 Kawashima et al 31 reported a lower pharyngeal airway width in preschool children of 12.1 mm. Abu Allhaija and Al-Khateeb 14 reported the average lower pharyngeal airway width of 15 skeletal class I girls from 14 to 17 years of age to be 12.9 6 5.2 mm.…”

Section: Discussionmentioning

confidence: 98%

Pharyngeal airway in children with prognathism and normal occlusion

Takemoto¹,

Saitoh²,

Iwasaki³

et al. 2011

The Angle Orthodontist

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Objective: To test the hypothesis that there is no difference in the pharyngeal airway width and the position of the maxillofacial skeleton between prognathic and normal children. Materials and Methods: Twenty-five girls with prognathism (mean, 7.9 6 0.9 years old) and 15 girls with normal occlusion (mean, 8.4 6 1.5 years) participated in this study. On each girl's lateral cephalogram, the coordinates of all points were marked and systematically digitized using a mechanical three-dimensional digitizing system. An independent-groups t-test was used to detect significant upper and lower pharyngeal width differences between the two groups. Correlations between the horizontal positions of each point and upper and lower pharyngeal widths were examined.

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Section: Discussionmentioning

confidence: 98%

Pharyngeal airway in children with prognathism and normal occlusion

Takemoto¹,

Saitoh²,

Iwasaki³

et al. 2011

The Angle Orthodontist

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“…For reducing error, each index was measured three times and took the average. At the same time, panoramic radiographs, intro-oral photographs of patients and the study models of pretreatment and posttreatment were combined to localize the positions of landmarks accurately [5][6][7] .…”

Section: Error Controlmentioning

confidence: 99%

Morphological Characteristics of the Cranial Base in Sagittal Malocclusion

Liu

Zheng

et al. 2013

J. Hard Tissue Biology.

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The purposes of this study were to compare cranial base morphology in different types of sagittal malocclusion and to explore regular patterns.Fifty-six cases of Class I, II and III malocclusion (age: 10-15 years old) with average angle were selected; this comprised 17 cases in the Angle Class I group, 20 cases in the Class II group and 19 cases in the Class III group. The analysis of the cranial base index for the three groups was performed, including one-way analysis of variance for paired comparison.Significant differences were found among the three groups for posterior cranial base length, which gradually decreased from Class I via Class II to Class III. The gradual decrease of intermediate cranial base angle from Class I to Class III showed statistical differences. Furthermore, there were gradual increases of anterior cranial base angle and BAS-FH angle, which also showed statistical differences. The length of the anterior cranial base(S-N) of Class II decreased, and no significant differences were found between Class I and III malocclusion for the length of SN. No significant differences were found for the cranial base angle, sella angle, cranial base angle, posterior cranial base angle and the length of SO-Ar in different sagittal directions.The structure of the cranial base in sagittal malocclusion presented some regularities, and it could be considered that the growth of the cranial base was involved in the development of malocclusion. The posterior cranial base and sella had a significant influence on the formation of sagittal malocclusion.

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“…Although dolichofacials produced significantly lower Ptm-Ba values, the inclination of the anterior cranial base angle did not change significantly in the group comparisons. Other authors 3,9,10 further substantiate this finding, as they did not indicate any group differences in the cranial base plane inclination (NSBa). Tourné, 24 in turn, argued that the cranial base angle seems to exert less influence on the development of the vertical face than is commonly assumed.…”

Section: Discussionmentioning

confidence: 63%

“…Mergen and Jacobs, 18 Kerr 11 and Trotman et al 25 believe that the aforesaid dolichofacials' anteriorly repositioned maxilla and mandible may also be associated with a reduced sagittal dimension of the nasopharyngeal airway. Some studies 1,8,9,10 also reinforce the hypothesis that dolichofacials exhibit smaller nasopharyngeal airways. Joseph et al 8 found a narrowing of the pharyngeal airway in hyperdivergent patients, as indicated by a significantly lower ad 1 -Ptm.…”

Section: Discussionmentioning

confidence: 75%

Dimensões nasofaringeanas e faciais em diferentes padrões morfológicos

Feres

Enoki²,

Anselmo‐Lima³

et al. 2010

Dental Press J. Orthod.

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OBJETIVO: o presente estudo propõe-se a comparar as dimensões da nasofaringe e as características esqueléticas avaliadas por exame cefalométrico, em indivíduos com padrões morfológicos distintos. MÉTODOS: foram utilizadas 90 telerradiografias de pacientes de ambos os gêneros, de 12 a 16 anos de idade, as quais foram igualmente divididas em três grupos distintos, referentes aos padrões morfológicos - braquifacial, mesofacial e dolicofacial. Foram realizadas medições específicas da região nasofaringeana (ad1-Ptm, ad2-Ptm, ad1-Ba, ad2-S0, (ad1-ad2-S0-Ba-ad1/Ptm-S 0-Ba-Ptm) X 100, e Ptm-Ba) e relativas ao padrão esquelético da face. RESULTADOS: observou-se que os pacientes dolicofaciais apresentaram menor profundidade sagital óssea (Ptm-Ba) e da via aérea da nasofaringe (ad1-Ptm e ad2-Ptm). Sugere-se que essas diferenças estejam relacionadas a um posicionamento relativamente mais posterior da maxila, comum a esses pacientes. Todavia, não foram detectadas diferenças quanto à espessura de tecido mole na parede posterior nasofaringeana (ad1-Ba e ad2-S0), ou à sua proporção em relação a toda a área delimitada para a nasofaringe [(ad1-ad2-S0-Ba-ad1/Ptm-S 0-Ba-Ptm) X 100]. CONCLUSÃO: sugere-se, portanto, que as características faciais de excesso vertical encontradas em pacientes dolicofaciais podem ocorrer, dentre outros fatores, em virtude da obstrução da via aérea nasofaringeana, uma vez que tais dimensões se apresentaram menores para os dolicofaciais.

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Cephalometric evaluation of facial types in preschool children without sleep-related breathing disorder

Cited by 17 publications

References 31 publications

Pharyngeal airway in children with prognathism and normal occlusion

Pharyngeal airway in children with prognathism and normal occlusion

Morphological Characteristics of the Cranial Base in Sagittal Malocclusion

Dimensões nasofaringeanas e faciais em diferentes padrões morfológicos

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