Evaluation of Changes in the Pharyngeal Airway Space as a Sequele to Mandibular Advancement Surgery: A Cephalometric Study

Effects of surgical mandibular advancement on the upper airways of adult class II patients: A systematic review with meta‐analysis

“…The MA of the short‐term anteroposterior linear measurements of the oropharynx showed statistically significant increase at the level of the posterior border of the tongue (SMD: 0.52, CI: 0.21, 0.84, P = .001; I 2 : 60.5%), of the Gonion (SMD: 1.24, CI: 0.56, 1.91, P < .001; I 2 = 88.8%) and of the second cervical vertebra (SMD: 0.92, CI: 0.14, 1.70, P = .021; I 2 : 88.7%) (Figure 6). The study authored by Nishanth and co‐workers, 44 excluded from the MA, pointed out significant increase of oropharyngeal linear dimension measured at the border of the tongue, both immediately after the intervention and in a 6 months follow‐up.…”

“…Twenty papers were finally included in the SR 32‐51 . The data extracted from the included papers are reported in Table 2.…”

“…Twenty papers were finally included in the SR. [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] The data extracted from the included papers are reported in Table 2. The number of subjects included in the studies ranged from 15 to 102, with a total number of 617 Class II adult individuals treated with SMA.…”

“…Of the 20 studies selected for the qualitative synthesis, 17 manuscripts were included in the quantitative analysis: two studies 42,44 were excluded from the statistical pooling due to the insufficient number of raw data reported or unclear statistical analysis, while one study 46 was excluded from the MA as it was the only assessing the airway measurements on acoustic pharyngometry. The timing of the post-surgical airway assessments varied widely (from 1 week to 12 years post-surgery).…”

“…Seventeen studies evaluated the oropharyngeal anteroposterior linear changes: twelve studies [33][34][35][36][38][39][40][43][44][45]47,51 reported significant changes, four studies 37,41,48,50 observed non-significant findings and one study 32 revealed an increase in the linear oropharyngeal dimension (>2 mm), but not dedicated statistics was run. The MA of the short-term anteroposterior linear measurements of the oropharynx showed statistically significant increase at the level of the posterior border of the tongue (SMD: 0.52, CI: 0.21, 0.84, P = .001; I 2 : 60.5%), of the Gonion (SMD: 1.24, CI: 0.56, 1.91, P < .001; I 2 = 88.8%) and of the second cervical vertebra (SMD: 0.92, CI: 0.14, 1.70, P = .021; I 2 : 88.7%) (Figure 6).…”