Biomedical subjects

Irmtrud Jonas

Publications and source records attributed to Irmtrud Jonas.

4 recordsLinked to original sources

PubMed2007

One- or two-stage palate closure in patients with unilateral cleft lip and palate: comparing cephalometric and occlusal outcomes.

OBJECTIVE: To assess facial growth and dentoalveolar development in two groups of patients with complete unilateral cleft lip and palate. Primary surgical treatment differed in the timing of hard palate closure. DESIGN: Forty-three patients with unilateral cleft lip and palate were examined. Twenty-two patients underwent early one-stage closure of the hard and soft palate cleft (mean age 23.0 +/- 4.7 months); in 21 patients, the hard palate closure was delayed to 86.3 +/- 39.2 months of age. Lateral cephalograms and dental casts were consecutively analyzed at four stages between 6 and 18 years of age. RESULTS: Lateral cephalometric analysis revealed no significant intergroup differences in the sagittal and vertical craniofacial dimensions at any time. Dental cast analysis showed constriction of the upper anterior arch width at the ages of 6 and 10 years in patients with one-stage surgical palate closure, but a difference could no longer be verified at the ages of 15 and 18 years. CONCLUSIONS: The transverse distances in the upper jaw developed initially more positively in the group with delayed hard palate closure, but it became apparent later that the transverse deficiency after one-stage palate closure could be compensated for. When considering surgical treatment in general, the advantages of the delayed hard palate closure must be weighed against criteria favoring the early one-stage closure of the hard and soft palate.

Adolescent↗

PubMed2003

Cephalometric assessment of the posterior airway space in patients with cleft palate after palatoplasty.

OBJECTIVE: Upper airway obstruction and mouth breathing influence facial growth and development, which may result in breathing disorders while asleep. The purpose of the present investigation was to analyze cephalometric alterations between patients with cleft palate and a noncleft control group in an obstructive sleep disordered breathing-specific tracing. SETTING: The study was conducted in the cleft palate clinic of a university hospital. PARTICIPANTS: Fifty-three subjects with a mean age of 12.3 +/- 3.7 years (range 6.3 to 17.2 years). The cohort included 33 subjects (13 females, 20 males; mean age 12.1 +/- 3.8 years, mean body mass index 17.5 +/- 2.9 kg/m(2)) with surgical closure of a unilateral or bilateral cleft palate and a matched control of noncleft participants. None of the subjects suffered from sleep disordered breathing syndrome. RESULTS: Compared with the controls, patients with cleft palate had a significant narrow anterior-posterior dimension of the pharynx at the level of the maxillary plane and the narrowest width, a more downward hyoid position, and a longer uvula. CONCLUSIONS: Patients with cleft palate appear to present pharyngeal and craniofacial distinctive features that characterize patients with obstructive sleep disordered breathing and differ from those of a noncleft control.

Adolescent↗

PubMed2002

3.3 Human resource management.

The most valuable of all resources in a dental teaching hospital are human intelligence and wisdom. Increasingly, universities recognize that their mission to become a centre of academic (and clinical) excellence is dependent on the most constructive and empowering use of their staff and faculty. The appropriate management and empowerment of individuals will help to maximize intellectual potential, research abilities, educational, clinical and management skills to the mutual benefit of all.

Developing Countries↗

PubMed2002

Sleep-related obstructive disordered breathing in cleft palate patients after palatoplasty.

Sleep-disordered breathing is frequently associated with children presenting congenital midface defects. Because of structural and functional anomalies in the upper airway, children with cleft palate, especially after surgery, may carry a higher risk of developing sleep-disordered breathing. However, the presence of such sleep-disordered breathing in older cleft palate children has not been emphasized. The aim of this comparative overnight cardiorespiratory sleep study was to evaluate cleft palate patients according to sleep-disordered breathing. A group of 43 cleft palate children (17 girls and 26 boys; mean age, 12.1 +/- 3.8 years) was compared with a control group of 20 randomly selected, noncleft children matched for age, sex, and body mass index. None of the patients suffered from manifest sleep-disordered breathing. Cleft palate patients had a statistically significantly higher respiratory disturbance index and snoring index, but no increased apnea index. The data suggest that cleft palate patients having undergone primary closure of the palate demonstrate microsymptoms of nocturnal upper airway obstruction.

Adolescent↗