Bio

Short Biography of Dr. Peter Okong'o

Dr Peter Okong'o BDS, SMM (Orthodontics) is a tutorial fellow in the division of Orthodontics of the Department of Paediatric Dentistry and Orthodontics of the School of Dental Sciences of the College of Health Sciences of the University of Nairobi with an 8-year teaching and mentoring experience.
He is a member of World Federation of Orthodontists and the Chinese Orthodontic Society.

Publications


2018

Okong’o, PO, Lu YQ.  2018.  The study of the airway and craniofacial morphology characteristics of individuals with different modified Mallampati scores before orthodontic treatment 正畸治疗前患者的Mallampati评分与气道和颅面形态的相关研究. Abstract

Objective:
The aim of this study is to investigate the airway and craniofacial morphology characteristics of individuals with different modified Mallampati scores before they undergo orthodontic treatment.
Materials and Methods:
According to the inclusion criteria, 54 patients (age 15-49 years) were included in the study. The modified Mallampati score of each patient was recorded, and then CBCT and lateral cephalograms of each patient were taken. Cephalometric analysis, CBCT analysis of pharyngeal volumes and transverse jaw dimensions were done for each patient. The patients were stratified into two groups according to their modified Mallampati scores: group 1 (Mallampati I and II); group 2 (Mallampati III and IV). The differences between the two groups were calculated and analysed using descriptive statistics and independent t-test. The relationship between modified Mallampati score and cephalometric morphology, pharyngeal airway volume was analysed using logistic regression analysis.
Results:
The cephalometric analysis results showed that: Maxillary length (ANS-PNS) (p ≤ .05); the perpendicular distance between the hyoid bone and the Mandibular plane (p ≤ .05); the maximum soft palate thickness (p ≤ .05); and lower airway dimension (p ≤ .05) are statistically significantly different between group 1 and group 2. A binary logistic regression identified the perpendicular distance of the hyoid bone from the lower border of the mandible (Hyoid-MP Perp) to be significantly (p < 0.05) and positively related (regression coefficient β =.168) to group membership. The following prediction formula was obtained: probability of belonging to group 2: p = 1 / (1 + exponential (exp)−f), where f = -1.285+0.168x Hyoid-MP Perp.
Conclusion:
Maxillary length (ANS-PNS); the perpendicular distance between the hyoid bone and the Mandibular plane; the maximum soft palate thickness and lower airway dimension may affect the score of Modified Mallampati classification.

Key words: modified Mallampati classification, craniofacial morphology, pharyngeal airway

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