Comparative Evaluation of the Relationship Between Airway Inadequacy, Head Posture, and Craniofacial Morphology in Mouth-Breathing and Nasal-Breathing Patients: A Cephalometric Observational Study.

BACKGROUND: The process of respiration is the primary factor of the posture of the jaws and tongue. Thus, a changed respiratory form like mouth breathing can change the posture of the head, jaw, and tongue. This, in turn, could change the equilibrium of pressure on the jaws and teeth thus affecting jaw growth and teeth positions. The influence of nasorespiratory function on craniofacial growth has stimulated interest and debate for more than a century. Mouth breathing is the reason for numerous orthodontic glitches such as a mouth breather's face evolving aberrantly because of of functional disruptions triggered by chronic airway obstruction. The relationship between nasorespiratory function and dentofacial development remains controversial despite the long-standing clinical concern of orthodontists, so there was a need to evaluate and compare the relationship between head posture, airway inadequacy, and craniofacial morphology in mouth breathers and nasal breathers. METHODOLOGY: Forty patients were selected and divided equally into two groups: mouth breathers and nasal breathers. Patients were diagnosed as mouth breathers based on physical examination and a history of chronic allergic rhinitis, adenoid, and tonsil enlargement. Lateral cephalograms were taken for all patients in the natural head position (NHP) with the Planmeca Proline XC Dimax3 x-ray machine (Planmeca, Helsinki-Uusimaa, Finland). All lateral cephalograms were traced and analysis was done to check airway, head posture, and craniofacial morphology. Descriptive statistics were performed to obtain the means and standard deviation of all the sample sizes. Unpaired t test was performed between nasal breathers and mouth breathers to check and evaluate the relationship. RESULT: Mouth-breathing patients varied from nasal-breathing patients in airway adequacy and craniofacial morphology. A little, but not statistically significant, difference was seen in head posture between the two groups. CONCLUSIONS: Early interception of mouth breathing in patients could be very helpful, as the postural changes in the mouth-breathing patients, if continued for a longer period of time, could be the reason for severe skeletal deformities as well as dental malocclusion.

Perceptions and challenges of a first-year dental student - A cross-sectional study.

Introduction: Undergraduate dental training is demanding and rigorous, unaware students face a lot of challenges after entering the course. Thus, the study aims to find out from a dental sophomore the challenges they face during the first year of dental school. Methodology: An e-questionnaire study was conducted on 932 second-year Bachelor of Dental Surgery students of India. The questions help us gauge problems and hurdles faced by a dental sophomore like information related to difficulty levels, laborious nature and so on. Chi-square test is to find out relativity and association between the variables. Results: Pre-clinical prosthodontics was found the most laborious and a gender-wise significant difference (P < 0.01) was noted amongst females (437, 71.06%) and males (157, 49.53%). Conclusion: This study highlighted that students are usually unaware about the course, the type of content reading, learning, laborious nature of practical work and so on.