The position of the occlusal plane in natural and artificial dentitions as related to other craniofacial planes.

Purpose: This study aimed at determining the most reliable ala-tragus line as a guide for the orientation of the occlusal plane in complete denture patients by use of cephalometric landmarks on dentate volunteers.

Materials And Methods: Analysis was made for prosthodontically related craniofacial reference lines and angles of lateral cephalometric radiographs taken for 47 dentate adults. Variables were determined and data were analyzed using SPSS (SPSS, Inc.

Crown-root ratio of permanent teeth in cleft lip and palate patients.

Objectives: To determine root lengths of fully developed permanent teeth of cleft lip and palate (CLP) patients and to define their crown-root (C/R) ratios.

Method: Crown height and root length of permanent teeth were measured from panoramic radiographs of 44 CLP patients and 37 controls. A total of 1397 teeth were measured, and C/R ratios were calculated.

Prevalence of dental anomalies in a population of cleft lip and palate patients.

Objective: The aim of our study was to investigate radiographically the prevalence of dental anomalies in a group of Jordanian cleft lip and/or palate subjects.

Design: This is a retrospective review of panoramic radiographs of 78 subjects with cleft lip and/or palate that were evaluated from their file records and investigated for possible dental anomalies.

Results: Dental anomalies were found frequently in cleft lip and/or palate subjects.

Maxillary incisor proclination effect on the position of point A in Class II division 2 malocclusion.

Objective: To test the hypothesis that the magnitude of alteration in the position of point A is not associated with proclination of the upper incisors in Class II division 2 malocclusion.

Materials And Methods: Cephalometric films were taken for 30 Class II division 2 patients (8 males and 22 females; average age, 18.3 years) before and after upper incisor proclination.

Angulation of mandibular third molars as a predictive factor for pericoronitis.

Aim: The aims of this study were to investigate the association between pericoronitis and the angular position, state of eruption, and the depth of impaction of mandibular third molars as well as to compare these findings with similar studies.

Methods And Materials: A total of 242 patients ranging in age from 18 to 41 years of age suffering from pericoronitis were examined. Subjective and objective observations were recorded on a checklist that included the name, age, gender, type of pericoronitis and state of eruption, position of the affected tooth for each patient as well as any radiographic changes in the mandibular third molars.

Tooth size discrepancies in female patients with palatally impacted canines.

Background: Small upper lateral incisors in patients with palatally impacted canines may contribute to inter-arch tooth size discrepancies.

Aim: To compare the Bolton ratios in female patients with and without unilateral palatally impacted canines.

Methods: The pretreatment dental casts of 30 female patients with unilateral palatally impacted canines (Impaction group) and 30 female patients without palatally impacted canines (Control group) were used.

Dental development in subjects with thalassemia major.

Aim: The aim of this study was to evaluate the dental development of patients with ss-thalassemia major and to compare it with unaffected children.

Methods And Materials: Panoramic radiographs of 44 thalassemic patients taken before the age of 16 years were examined. The subjects consisted of 29 males and 15 females ranging in age from 4.

The relationship of the inferior dental canal to the roots of impacted mandibular third molars in a Jordanian population.

Objective: The aim of this study was to evaluate the topographic relationship between the inferior dental canals (IDCs) and the roots of impacted mandibular third molars.

Methods: Preoperative orthopantomograms (OPGs) were examined and the proximity of the IDC to the roots of impacted mandibular third molars was categorized into the following: groups: superimposition, adjacent, perforation, grooving, notching, or none. The categories notching, grooving, and perforation were regrouped together and called the true relationship between the IDC and the root apices.

The surgical removal of mandibular third molars: a study in decision making.

Objective: The aim of this study was to investigate and analyze the angulation of and the various indications for removal of mandibular third molars in Jordanians as a representative Arab sample.

Method And Materials: The data included in this retrospective study were obtained from the clinical and radiographic records of 1,282 patients undergoing mandibular third molar surgery during a 5-year period from 1994 to 1999. The indications for removal of the mandibular third molars were classified in accordance with age and gender.