Biomedical subjects

F S Ryan

Publications and source records attributed to F S Ryan.

3 recordsLinked to original sources

PubMed2006

Distraction in a case of otopalatodigital syndrome type II.

INTRODUCTION: Otopalatodigital syndrome type II is a rare X-linked recessive disorder with generalized skeletal dysplasia and hearing anomalies. Its features include conductive hearing loss, unusual facies, cleft palate, micrognathia, and overlapping flexed fingers and toes. It is a more lethal variant of otopalatodigital syndrome type I. There are many consistently reported craniofacial and dental findings; however, no case has been published in dental literature. CASE REPORT: We report a case of otopalatodigital syndrome type II with micrognathia, cleft of the soft palate, and partial anodontia, and discuss the combined orthodontic and surgical management. CONCLUSION: We also discuss the differential diagnosis and consider more recent theories on possible aetiology as well as clinical management strategies for such cases.

Anodontia↗

PubMed2006

Long term results of mandibular distraction.

Mandibular distraction osteogenesis has become a popular surgical modality due to its many advantages over conventional orthognathic surgical procedures. However, in spite of the technique having been used for over 15 years, no concrete long term results are available regarding the stability of results. We discuss the various studies which have reported either in favour or against the stablility of results after distraction. We report a series of 6 cases (3 unilateral and 3 bilateral distraction) where distraction was carried out before puberty and followed them up to seven years after removal of distractors. This case series shows that results achieved by distraction osteogenesis are unstable or best unpredictable with respect to producing a permanent size increase in the mandible. The role of the distraction osteogenesis in overcoming the pterygomassetric sling is questionable. We suggest a multicenter study with adequate patient numbers treated with a similar protocol and documented after growth cessation to have meaningful conclusions on the debate of distraction osteogenesis versus orthognathic surgery.

Adolescent↗

PubMed2005

Ectodermal dysplasia--an unusual dental presentation.

Ectodermal dysplasia (ED) is a rare group of disorders affecting the hair, teeth, nails and sweat glands to a variable degree. There is a wide range of clinical presentation of ED. Missing teeth or abnormal tooth form may be the first indicator of the presence of the disorder. There is typically hypodontia with microdontia. We present an unusual case of ED with severe hypodontia and macrodontia affecting all first permanent molar teeth. We also consider the classification and presentation of this disorder.

Anodontia↗