scholarly journals Evaluation of characteristics of the craniofacial complex and dental maturity in girls with central precocious puberty

2018 ◽  
Vol 88 (5) ◽  
pp. 582-589 ◽  
Author(s):  
Hee-Kyung Lee ◽  
Sung-Hwan Choi ◽  
Dong Fan ◽  
Kyung-Mi Jang ◽  
Min-Seon Kim ◽  
...  
Keyword(s):  
Precocious Puberty ◽  
Central Precocious Puberty ◽  
Strong Positive Correlation ◽  
Plane Angle ◽  
Gonial Angle ◽  
Mandibular Plane ◽  
Mandibular Teeth ◽  
Dental Maturity ◽  
Craniofacial Complex ◽  
Mandibular Plane Angle

ABSTRACT Objectives: To identify unique characteristics of the craniofacial complex and dental maturity in girls with central precocious puberty (CPP). Materials and Methods: This study included 34 Korean girls with idiopathic CPP (mean age, 8.6 ± .5 years) and 28 normal healthy girls of the same chronological age. An initial evaluation of the growth pattern of the craniofacial complex and dental maturity was conducted by analyzing lateral cephalometric and panoramic radiographs. Results: The mandibular ramus height (44.4 ± 4.1 mm) and total mandibular length (10.8 ± 4.3 mm) (P = .004 and .021, respectively) were greater and the lower anterior facial height was lesser (63.2 ± 2.4 mm) (P = .040) in the CPP group than in the reference group. In addition, the gonial angle (12.9 ± 6.1°; P = .045) and the mandibular plane angle (34.9 ± 4.8°; P = .012) were smaller in girls with CPP than in normal healthy girls. All the mandibular teeth were more mature in girls with CPP (P < .001). A strong positive correlation was observed between the mandibular tooth formation stages and the presence of CPP in girls (r = .756 to .957; P < .001). Conclusions: CPP had an effect on the anteroposterior growth of the mandible in the craniofacial complex and the rotation of the mandibular plane angle. Early maturation of the mandibular teeth was observed in girls with CPP.

Craniofacial Morphology of Adult Unoperated Complete Unilateral Cleft Lip and Palate Patients

1993 ◽  
Vol 30 (4) ◽  
pp. 376-381 ◽  
Author(s):  
Leopoldino Capelozza ◽  
Sheyla Miki Taniguchi ◽  
Omar Gabriel Da Silva
Keyword(s):  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Normal Group ◽  
Craniofacial Morphology ◽  
Plane Angle ◽  
Gonial Angle ◽  
Facial Height ◽  
Mandibular Plane ◽  
Mandibular Plane Angle

The craniofacial morphology of 26 white unoperated complete unilateral cleft lip and palate patients (13 males, 13 females) was analyzed with cephalometry and compared with a control (normal) group. The results show that in the cleft group, the maxilla is smaller and more protruded, the lower anterior facial height is much larger, and the mandible shows well-defined differences (body, ramus, gonial angle, and mandibular plane angle).

scholarly journals The maxillary incisor display at rest: analysis of the underlying components

2018 ◽  
Vol 23 (6) ◽  
pp. 48-55 ◽  
Author(s):  
Waqar Jeelani ◽  
Mubassar Fida ◽  
Attiya Shaikh
Keyword(s):  
Soft Tissue ◽  
Linear Regression ◽  
Linear Regression Analysis ◽  
Plane Angle ◽  
Upper Lip ◽  
Facial Height ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
The Relationship ◽  
Mandibular Plane Angle

ABSTRACT Introduction: Maxillary incisal display is one of the most important attributes of smile esthetics. Objective: The aim of this study was to determine the relationship between maxillary incisal display at rest (MIDR) and various soft tissue, hard tissue and dental components. Methods: A cross-sectional study was conducted on 150 subjects (75 males, 75 females) aged 18-30 years. The MIDR was recorded from the pretreatment orthodontic records. The following parameters were assessed on lateral cephalograms: ANB angle, mandibular plane angle, palatal plane angle, lower anterior and total anterior facial heights, upper incisor inclination, upper anterior dentoalveolar height, and upper lip length, thickness and protrusion. The relationship between MIDR and various skeletal, dental and soft tissue components was assessed using linear regression analyses. Results: The mean MIDR was significantly greater in females than males (p = 0.011). A significant positive correlation was found between MIDR and ANB angle, mandibular plane angle and lower anterior facial height. A significant negative correlation was found between MIDR and upper lip length and thickness. Linear regression analysis showed that upper lip length was the strongest predictor of MIDR, explaining 29.7% of variance in MIDR. A multiple linear regression model based on mandibular plane angle, lower anterior facial height, upper lip length and upper lip thickness explained about 63.4% of variance in MIDR. Conclusions: Incisal display at rest was generally greater in females than males. Multiple factors play a role in determining MIDR, nevertheless upper lip length was found to be the strongest predictor of variations in MIDR.

scholarly journals Effects of Two-Phase Treatment with the Herbst and Preadjusted Edgewise Appliances on the Upper Airway Dimensions

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Woei Li Koay ◽  
Yanqi Yang ◽  
Christine Shuk Kwan Tse ◽  
Min Gu
Keyword(s):  
Negative Correlation ◽  
Upper Airway ◽  
Second Phase ◽  
Plane Angle ◽  
Herbst Appliance ◽  
Two Phase ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
Airway Dimensions ◽  
Mandibular Plane Angle

Aims. To assess the effects of two-phase treatment with the Herbst and the preadjusted edgewise appliances on upper airway dimensions and to investigate the correlation between changes in the upper airway dimensions and skeletal morphologies.Methods. A total of 27 Chinese male adolescents aged12.8±1.3years were selected. Lateral cephalograms were collected to assess the skeletal morphology and upper airway dimensions.Results. Following Herbst appliance treatment, the upper airway space was significantly enlarged, with the retropalatal (U-MPW) increasing by1.1±1.6 mm (P<0.001), the retroglossal (PASmin) increasing by1.3±2.9 mm (P<0.05), and the hypopharynx (V-LPW) enlarging by1.6±3.0 mm (P<0.01). PASmin was found to show a negative correlation to the mandibular plane angle (MnPl-SN) byr=-0.413(P<0.05). There was no significant change (P>0.05) in upper airway dimensions during the second-phase treatment.Conclusions. Herbst appliance treatment increased the oropharyngeal and hypopharyngeal airway dimensions among adolescents with Class II malocclusion, and the effects were maintained throughout the second treatment phase with a preadjusted edgewise appliance. There was a negative correlation between the change in the depth of the retroglossal pharynx and the mandibular plane angle.

scholarly journals Multiloop edgewise archwire treatment for a patient with a severe anterior open bite and amelogenesis imperfecta

2021 ◽  
Author(s):  
Ahmed I. Masoud ◽  
T. Peter Tsay
Keyword(s):  
Open Bite ◽  
Amelogenesis Imperfecta ◽  
Radiographic Examination ◽  
Orthodontic Appliances ◽  
Plane Angle ◽  
Anterior Open Bite ◽  
Posterior Teeth ◽  
Anterior Teeth ◽  
Mandibular Plane ◽  
Mandibular Plane Angle

ABSTRACT Amelogenesis imperfecta is a rare hereditary disorder that affects dental enamel and is often associated with an anterior open bite. Orthodontic treatment of a 16-year-old female patient with hypocalcified amelogenesis imperfecta and a 9-mm anterior open bite was presented. Radiographic examination revealed a steep mandibular plane angle, an increased lower face height, a Class II skeletal pattern, and a convex profile. Additionally, the patient had stainless steel crowns on all upper and lower posterior teeth and composite veneers on the upper anterior teeth. The patient was treated nonsurgically using a multiloop edgewise archwire (MEAW). MEAW mechanics allowed for successful correction of the anterior open bite, with significant reduction in the mandibular plane angle and improvement in the patient's profile. No fixed retainers were used, results remained stable 78 months after removal of orthodontic appliances. MEAW mechanics should be considered for patients with large anterior open bites, although this technique requires excellent patient compliance.

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