Acta odontologica Scandinavica · 2013
The influence of nasopharyngeal patency on the morphology of nasomaxillary complex.
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Paluch Zbigniew, Wojtyna Janusz, Misiołek Maciej
Аннотация
OBJECTIVE: The aim of this study was to compare the nasomaxillary complex in subjects with nasopharyngeal obstruction symptoms and the group with normal nasopharyngeal patency.
MATERIALS AND METHODS: The study analyzed lateral cephalograms and dental plaster casts of 229 orthodontic subjects from the orthodontic clinic, i.e. 129 (56%) females and 100 (44%) males, age range of 6-30 years (mean age = 13.79). The analysis of radiographs and cephalometric measurements were performed using Orto-TestPor-ZPaluch software. The study population examined according to the stage of cervical vertebral maturation was divided into three sub - groups [the CVM A group consisted of 57 (24.9%) subjects, the CVM B group consisted of 85 (37.1%) subjects and the CVM C group consisted of 87 (38%) subjects].
RESULTS: In the youngest age group with less than 50% airway patency, smaller values of SNA angle were observed together with diminished anterior palatal width compared with the non-obliterated group. The decrease in the area of the nasomaxillary complex and the decrease in posterior palatal width were observed in the oldest age group with less than 50% airway patency as compared to the subjects with normal patency.
CONCLUSIONS: The nasomaxillary complex morphology in subjects with decreased nasopharyngeal patency pre - disposes to air flow impediment through nasal respiratory passage. Non-extraction treatment of the upper dental arch and possible maxillary expansion can be considered when orthodontic treatment is planned in subjects with decreased patency of < 50% and CVM A.
MATERIALS AND METHODS: The study analyzed lateral cephalograms and dental plaster casts of 229 orthodontic subjects from the orthodontic clinic, i.e. 129 (56%) females and 100 (44%) males, age range of 6-30 years (mean age = 13.79). The analysis of radiographs and cephalometric measurements were performed using Orto-TestPor-ZPaluch software. The study population examined according to the stage of cervical vertebral maturation was divided into three sub - groups [the CVM A group consisted of 57 (24.9%) subjects, the CVM B group consisted of 85 (37.1%) subjects and the CVM C group consisted of 87 (38%) subjects].
RESULTS: In the youngest age group with less than 50% airway patency, smaller values of SNA angle were observed together with diminished anterior palatal width compared with the non-obliterated group. The decrease in the area of the nasomaxillary complex and the decrease in posterior palatal width were observed in the oldest age group with less than 50% airway patency as compared to the subjects with normal patency.
CONCLUSIONS: The nasomaxillary complex morphology in subjects with decreased nasopharyngeal patency pre - disposes to air flow impediment through nasal respiratory passage. Non-extraction treatment of the upper dental arch and possible maxillary expansion can be considered when orthodontic treatment is planned in subjects with decreased patency of < 50% and CVM A.