Nasal obstruction causes a decrease in lip-closing force
| Autor: | Atsushi Kawabata, Yousuke Mukai, Youichi Yamasaki, Kaei Washino, Kishio Sabashi, Issei Saitoh, Noriyuki Kitai |
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| Rok vydání: | 2011 |
| Předmět: |
Adult
medicine.medical_specialty Peak Expiratory Flow Rate Orthodontics Nose Significant negative correlation Nasal airway Young Adult otorhinolaryngologic diseases Humans Medicine Guest Editorial business.industry Airway Resistance Middle Aged respiratory system Lip Rhinomanometry Biomechanical Phenomena Normal group Surgery Anesthesia Female Nasal Obstruction business Airway Muscle Contraction |
| Zdroj: | Angle Orthod |
| ISSN: | 1945-7103 0003-3219 |
| Popis: | Objective: To investigate the relationship between nasal obstruction and lip-closing force. Materials and Methods: Nasal airway resistance and lip-closing force measures were recorded for 54 Japanese females. The subjects were classified into normal and nasal obstruction groups according to nasal airway resistance values. Differences between the normal and nasal obstruction groups in lip-closing force were tested statistically. Correlation coefficients were calculated between the measures for the normal and nasal obstruction groups. Results: Lip-closing force for the nasal obstruction group was significantly less than for the normal group (P < .05). In the normal group, nasal airway resistance did not correlate with lip-closing force, while in the nasal obstruction group a significant negative correlation was found between nasal airway resistance and lip-closing force (P < .05). Conclusions: Nasal obstruction is associated with a decrease in lip-closing force. When the severity of nasal obstruction reaches a certain level, the lip-closing force is weakened. |
| Databáze: | OpenAIRE |
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