Different techniques have been used to correct anterior and posterior crossbites in mixed dentition. This case report illustrates the treatment of anterior and unilateral posterior crossbites during the mixed dentition. The patient was a 9-year-old boy with a crossbite of the maxillary right permanent central incisor and a unilateral right posterior crossbite, both expressed by a functional shift in the sagittal and transverse dimensions. Two upper acrylic removable appliances, each with an expansion jackscrew, were used to correct the crossbites. The total active treatment time was 4 months; the treatment outcomes were successfully maintained for the subsequent 4 months. General and pediatric dentists, as well as orthodontists, may find this technique useful in managing crossbite cases of the mixed dentition and utilizing the discussion and illustrations for further clinical guidance.
PurposeThe present study aimed at determining whether the premature loss of a deciduous second molar results in a clinically relevant loss of space and arch length reduction.MethodsSplit mouth evaluation of approximately 32 patients at early permanent dentition stage with unilateral premature loss of the deciduous second molar either in the upper arch or the lower arch. The contra lateral side with no tooth loss served as controls. Dental models and radiographs were obtained. The space in the extraction site and control sides were measured and analyzed for space loss and eruption stage of premolars in three weeks time frame.Results and conclusionThe mean combined space before second primary molar extraction was 25.04 mm (±4.25), while the average space post extraction was 24.61 (±4.27) and the difference was found to be statistically significant (P < 0.01). Furthermore, neither subject’s age, nor successor premolar eruption stage were found to be correlated significantly with the amount of space loss (P-values 0.989 and 0.811, respectively). Space loss after premature extraction of second primary molar in three weeks time frame was statistically significant thereby emphasizing the use of space maintainers at the earliest.
The aim of this study was to report facial soft tissue cephalometric standards for a sample of Saudi adults and to compare them with the findings of other ethnic groups. Lateral cephalometric radiographs of 61 Saudi subjects (30 females and 31 males) with ages that ranged from 20 to 24 years were selected. Subjects had Class I occlusal relationship with a balanced facial profile. Holdaway soft tissue analysis was then applied to measure two angular and nine linear parameters. The obtained findings were then compared to the Anatolian Turkish, Japanese, and Holdaway reported norms. Saudi sample showed a more convex skeletal profile (1.75 mm ± 2.3) and prominent upper and lower lips. Nose prominence was found to be reduced (13.46 mm ± 3.22) and the H angle was increased (15.16°± 3.22). Saudi males were shown to have a more prominent upper lip and nose when compared with Saudi females (p < 0.05). It has been concluded that Saudi standards for Holdaway soft tissue analysis were found to be statistically different from other ethnic group reported findings. Considering such standards for the studied population would aid in better diagnosis and treatment planning.
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