No description available.

Thesis (M.D.S.)--University of Hong Kong, 1992. / Includes bibliographical references. Also available in print.

Background: Several treatment protocols exist for the management of patients with complete unilateral (CUCLP) and bilateral (CBCLP) cleft lip and palate, and little evidence exists on comparison of their outcomes. Objectives: To compare craniofacial morphology among individuals with CUCLP and CBCLP treated at different North American centers. Methods: Lateral cephalograms of 148 individuals with repaired CUCLP (average age = 8y 8m) and 93 individuals with repaired CBCLP (average age = 8y 10m) were analyzed. The group means for the different centers per cephalometric measurement evaluated (16 angular, 7 linear, and 2 ratio), were compared using ANOVA. Results: For both the CUCLP and CBCLP samples, the most significant differences were observed in the sagittal maxillary prominence. The center that performed primary alveolar bone grafting consistently showed the lowest maxillary prominence. Conclusions: Significant differences in craniofacial morphology, specifically maxillary prominence, exist among patients with CUCLP and CBCLP treated at different North American centers.

Cleft lip and/or palate is a craniofacial condition that can lead to complex speech disorders. In particular, the auditory-perceptual speech assessments of individuals with cleft palate can be difficult because cleft-type compensatory articulations may be outside of English phonology. Therefore, it is desirable to supplement auditory-perceptual assessments with instrumental measurements. In the first study, thirteen participants with cleft-type compensatory articulations completed ultrasound speech exams. The stimuli were repeated VCV combinations (target consonants: [t], [k], [s], [sh], [n], [ng]; vowel contexts: [a], [i], [u]). Ultrasound imaging confirmed auditory-perceptual impressions and revealed covert articulatory movements. In the second study, six participants were assessed after a course of speech therapy. Outcomes were recorded on a severity metric with categories describing auditory-perceptual and motor aspects of speech errors. The severity metric quantified the incremental changes in both dimensions. Based on the research presented, further investigations of cleft palate speech using ultrasound are warranted.

Background: Several treatment protocols exist for the management of patients with complete unilateral (CUCLP) and bilateral (CBCLP) cleft lip and palate, and little evidence exists on comparison of their outcomes. Objectives: To compare craniofacial morphology among individuals with CUCLP and CBCLP treated at different North American centers. Methods: Lateral cephalograms of 148 individuals with repaired CUCLP (average age = 8y 8m) and 93 individuals with repaired CBCLP (average age = 8y 10m) were analyzed. The group means for the different centers per cephalometric measurement evaluated (16 angular, 7 linear, and 2 ratio), were compared using ANOVA. Results: For both the CUCLP and CBCLP samples, the most significant differences were observed in the sagittal maxillary prominence. The center that performed primary alveolar bone grafting consistently showed the lowest maxillary prominence. Conclusions: Significant differences in craniofacial morphology, specifically maxillary prominence, exist among patients with CUCLP and CBCLP treated at different North American centers.

Cleft lip and/or palate is a craniofacial condition that can lead to complex speech disorders. In particular, the auditory-perceptual speech assessments of individuals with cleft palate can be difficult because cleft-type compensatory articulations may be outside of English phonology. Therefore, it is desirable to supplement auditory-perceptual assessments with instrumental measurements. In the first study, thirteen participants with cleft-type compensatory articulations completed ultrasound speech exams. The stimuli were repeated VCV combinations (target consonants: [t], [k], [s], [sh], [n], [ng]; vowel contexts: [a], [i], [u]). Ultrasound imaging confirmed auditory-perceptual impressions and revealed covert articulatory movements. In the second study, six participants were assessed after a course of speech therapy. Outcomes were recorded on a severity metric with categories describing auditory-perceptual and motor aspects of speech errors. The severity metric quantified the incremental changes in both dimensions. Based on the research presented, further investigations of cleft palate speech using ultrasound are warranted.

Thesis--University of Oregon. / Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

published_or_final_version / Dental Surgery / Master / Master of Dental Surgery

The application of precisely timed, short exposures of embryos to specific metabolic inbibitors is a useful method for analysing the biochemical aspects of development. The teratologic approach to the study of the biochemical requirerments of various organogenetic processes in the developing embryo was first formulated by Warkany (1944) who showed that the offspring of female rats maintained on a vitamin A deficient diet had characteristic patterns of malformations. [...]

No description available.