Objective:To explore the effects of mouth opening breathing for different reasons on children's maxillofacial development. Methods:One hundred and fifty-one children were selected as the research objects of this experiment. They were divided into 49 cases of adenoid hypertrophy group（group A）, 52 cases of tonsillar hypertrophy group（group B） and 50 cases of adenoid with tonsillar hypertrophy group（Group C）. Healthy children in the same period were selected as the control group, a total of 45 cases. The reflex nasopharyngeal measurement parameters, facial development indexes and cephalometric parameters of group A, group B, group C and control group were analyzed, and the incidence of Angle ClassⅡand Angle Class Ⅲ in group A, group B and group C were studied. Results:Compared with the control group, the reflex nasopharyngeal measurement parameters in group A, group B and group C was significantly different（P<0.05）, and the cephalometric parameters changed with variation in groups（P<0.05）. The incidence of Angle Class Ⅱ facial pattern in group A and group C was higher, but the incidence of Angle Class Ⅲ facial pattern in group B and group C was higher（P<0.05）. Conclusion:Adenoid hypertrophy leads to mandibular retraction; tonsil hypertrophy leads to anterior mandibular arch; adenoid hypertrophy and tonsil hypertrophy are easy to lead to clockwise rotation of the mandible. In clinical practice, to avoid children's uncoordinated maxillofacial development, we should correct the maxillofacial situation of children as soon as possible.
Child ; Humans ; Maxillofacial Development ; Malocclusion, Angle Class III/complications* ; Nasopharynx ; Adenoids ; Palatine Tonsil ; Mouth Breathing/etiology* ; Hypertrophy/complications* ; Mouth

BACKGROUND AND OBJECTIVES: Surgeons have tried various methods of adenoidectomy from the conventional transoral ad- enoidectomy using curettes or adenotomes to the newly developed transnasal endoscopic adenoidectomy using microdebriders. However, surgeons still face a great difficulty in achieving complete adenoidectomy due to the unfavorable anatomic structure and a narrow operating field. This study aims to introduce and try to establish a better way of performing transoral endoscopic adenoidectomy using microdebriders. MATERIALS AND METHODS: Thirty patients who underwent transoral endoscopic adenoidectomy using rnicrodebriders were prospectively randomized. Skull lateral radiographs and endoscopic photographs were obtained to analyze the surgical outcome of transoral endoscopic adenoidectomy using a microdebrider. RESULTS: There were no specific postoperative complications such as hemorrhage or infection. Nasal obstruction disappeared within 7 postoperative days, and mouth breathing and snoring were simultaneously improved. CONCLUSION: Transoral endoscopic adenoidectomy using a microdebrider can be considered as one of the most effective methods for more complete adenoidectomy to relieve nasal obstruction and to reduce mouth breathing and snoring.
Adenoidectomy* ; Hemorrhage ; Humans ; Mouth Breathing ; Nasal Obstruction ; Postoperative Complications ; Prospective Studies ; Skull ; Snoring

Oral habits, such as mouth breathing, sucking, and lip and tongue habits, are important factors that lead to malocclusion. The abnormal pressure will disrupt the muscle balance of the oral and maxillofacial complex and interfere with the normal development of the maxillofacial complex. Therefore, early diagnosis and successful treatment of oral habits are pivotal to the early treatment of malocclusion. This paper discusses the malocclusion caused by children's oral habits and the corresponding intervention methods.
Child ; Fingersucking ; Habits ; Humans ; Malocclusion/therapy* ; Mouth Breathing/complications* ; Tongue Habits