Worasakwutiphong et al.18 used 3D stereophotogrammetry to evaluate nasal changes after orthognathic surgery (two-jaw surgery) in thirty-eight mandibular prognathic
and Class III malocclusion patients.
Particularly noteworthy among the 19 interlandmark distances measured in the control group are subnasale-gnathion (sn-gn) used as a prognathic
maxillary profile indicator, nasion-gnathion (n-gn) distance corresponding to face height, cheilion- cheilion (ch (r) -ch (l)) distance corresponding to mouth width and nasion-pronasale (n-prn) distance tatistical shape analysis compares body forms by using specific landmarks determined by anatomical (n-prn) distance corresponding to nasion bridge lenght (Fig.
Jacob et al compared class I and class II sub division 1 malocclusion and found that boys had more prognathic
mandibles as compared to girls and Class I had greater mandibular lengths comparatively to Class II sub division 1 in children of French Canadian at age of 15years.7 Eduardo Bernabe et al in their study explored the three skeletal classes and results from their study supported the concept that malocclusions have physical, psychological, and social effects on quality of life.8 In this study the main focus of interest were three components which are cranial base, maxilla and mandible.
All participants in this study were permanent mandibular individuals with normal/mild prognathic
maxilla, retrognathic mandible, normal-vertical growth pattern, and Class II molar relationship.
(34) He compared these noble features with the more primitive ones he also observed: 'Some have large almond eyes, often with the "Mongoloid" fold, convex noses, and fine mouths; others have the concave, flat, broad noses, the squinty eyes, bulging foreheads, and prognathic
jaws of the more primitive Indonesians'.
Larvae have retractable prognathic
heads and the prothorax is highly projected during feeding (Shorey & Anderson 1960).
The extraoral examination (Figure 1) showed that he had a dolichofacial, symmetrical face and a prognathic
mandible with a Class III appearance.
Type 2 Type 3 1 >5.7[degrees] class II <3.2[degrees] class III 2 <74.6[degrees] retrognathic >78.7[degrees] mandible prognathic
mandible 3 >83.2[degrees] prognathic
<79.4[degrees] maxilla retrognathic maxilla 4 >80.5[degrees] deep <68.4[degrees] open bite tendency bite tendency 5 <77.6[degrees] class >85.2[degrees] class II tendency III tendency 6 >0.75 short face tendency <0.65 long face tendency 7 >31.4[degrees] mandible <26.8[degrees] mandible high angle tendency lower angle tendency 8 MW = 0 mm edge to edge MW <0 mm anterior cross bite No.
Dysmorphic features were not initially recognized; however, she was subsequently noted to have deep set eyes, prominent forehead, bulbous tip of the nose, hypertelorism, and prognathic
 the facial appearance is characteristic with a beaked nose, prognathic
jaw, small face and a prominent forehead.
Examination revealed a tall man with a normal blood pressure, pulse, respiratory rate and temperature, but with orbital hypertelorism, a prognathic
jaw, an eunichoid stature and long arms.