Surgical-orthodontic Correction Of Transverse Maxillary Deficiency
Dentistry; Oral Surgery & Medicine
Lehman J A; Haas A J
Dental Clinics of North America
1990
1990-04
Journal Article or Conference Abstract Publication
n/a
Treatment Of Cleft-palate Associated With Robin-sequence - Appraisal Of Risk-factors
airway-obstruction; anomalad; cleft palate; Dentistry; management; Oral Surgery & Medicine; robin sequence; sleep-apnea; speech; Surgery
Mandibular hypoplasia, airway obstruction, and a typical wide U-shaped cleft palate comprise the Robin sequence, Although much has been written regarding the treatment of these patients in the neonatal period, the literature reveals little information regarding later care of the cleft palate in these patients, The purpose of this study is to examine patients with the Robin sequence and evaluate the risk of postsurgical problems and outcome related to the neonatal period. Thirty-six patients with the Robin sequence presenting from 1972 through 1990 were reviewed, A majority of patients had feeding and respiratory difficulties, to varying degrees, following birth, These problems were treated successfully by maneuvers ranging from positioning to two infants who eventually required tracheostomy Thirty-four patients had palate repair, Age at repair averaged 16.2 months, and one third of patients had associated anomalies, Infants who experienced problems following palatoplasty were those who had histories of severe difficulties and complications in the early months of life, In addition, patients with associated congenital anomalies had significantly more problems at the time of palate repair than those without anomalies, Those patients with the Robin sequence, who historically had minimal difficulty following birth, experienced few complications at the time of palate repair, Of the 34 patients with repaired palates, 23 demonstrated sufficient follow-up to allow for evaluation of speech outcome, Satisfactory or normal speech production was noted in 65.4%, This is not significantly different from that observed in all patients undergoing cleft palate repair during this same time period (74.9%), Secondary pharyngoplasty procedures were required in 17.4%, An overall complication rate of 29.4% was noted with palatal fistula occurring in 11.8%, Examination of an infant's immediate postnatal period, as well as for the presence of associated anomalies, will provide important predictive information on the potential difficulties following cleft palate repair, In addition, palatoplasty, as part of the overall team approach to the cleft patient, results in a satisfactory speech outcome in approximately two thirds of patients with the Robin sequence.
Lehman J A; Fishman J R A; Neiman G S
Cleft Palate-Craniofacial Journal
1995
1995-01
Journal Article or Conference Abstract Publication
<a href="http://doi.org/10.1597/1545-1569(1995)032%3C0025:tocpaw%3E2.3.co;2" target="_blank" rel="noreferrer noopener">10.1597/1545-1569(1995)032%3C0025:tocpaw%3E2.3.co;2</a>
ULTRASTRUCTURAL CHARACTERISTICS OF A CELL-LINE DERIVED FROM A MELANOTIC NEUROECTODERMAL TUMOR OF INFANCY
Pathology; cell line; Dentistry; Oral Surgery & Medicine; freeze-fracture; melanotic neuroectodermal tumor of infancy; transmission electron microscopy
Thin section and freeze-fracture transmission electron microscopy were used to examine and identify the cytoplasmic and membrane structures in a cell line derived from a melanotic neuroectodermal tumor of infancy (MNTI). The cultured cells had a uniform appearance after 70 population doublings characterized by long dendritic processes and evidence of melanin production. The cytoplasm contained numerous melanosomes in various stages of development, vesiculated rough endoplasmic reticulum, microfilaments and uncoated as well as coated vesicles. The membrane specializations included caveoli, coated pits, gap junctions, microfilaments, desmosome-like structures and lamellipodia. The ultrastructural appearance of the cultured MNTI cells was similar to features previously seen in electron micrographs of MNTI tumor specimens. However, correlated freeze-fracture and thin section micrographs permitted further identification of structures previously described. The MNTI cell line represents one of the cell types of the tumor and provides an opportunity for further study of the pathogenesis of this rare tumor.
Claman L J; Stetson D; Steinberg B; Shuler C F
Journal of Oral Pathology & Medicine
1991
1991-05
Journal Article or Conference Abstract Publication
<a href="http://doi.org/10.1111/j.1600-0714.1991.tb00428.x" target="_blank" rel="noreferrer noopener">10.1111/j.1600-0714.1991.tb00428.x</a>
THE EFFECTS OF SURGICEL ON BONE-FORMATION
Dentistry; Oral Surgery & Medicine; Surgery
Nappi J F; Lehman J A
Cleft Palate Journal
1980
1980
Journal Article
n/a
PLEXIFORM NEUROFIBROMA OF MAJOR SALIVARY-GLANDS IN CHILDREN
Dentistry; Oral Surgery & Medicine
Weitzner S
Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontics
1980
1980
Journal Article
<a href="http://doi.org/10.1016/0030-4220(80)90331-x" target="_blank" rel="noreferrer noopener">10.1016/0030-4220(80)90331-x</a>
Electromyographic Evaluation of Masticatory Muscles in Dentate Patients Versus Conventional and Implant-Supported Fixed and Removable Denture Wearers- A Preliminary Report Comparing Model Foods
bridges; chewing patterns; Dentistry; fluids; force; Oral Surgery & Medicine; performance; reflex; size; swallowing threshold; texture-perception; young
Purpose: To evaluate differences in masticatory muscle function during chewing of model foods designed to differ in fracture strength between dentate subjects (n = 5, ages 59 to 68 years) versus patients treated with a maxillary conventional complete denture opposing natural dentition or one of the following types of mandibular complete dentures: conventional, implant-supported overdenture, implant-supported fixed denture (n = 20, ages 45 to 83 years). The authors hypothesized that denture wearers would differ in duration of chewing, frequency of chewing, and masticatory muscle activity while preparing a bolus for swallowing. Materials and Methods: Surface electromyography was recorded bilaterally from the masseter, anterior temporalis, and anterior digastric. Masticatory muscle activity was evaluated using scaled values of the area under the electromyographic curve, while subjects chewed agar-based model foods with different fracture strengths. Chewing duration and frequency also were calculated from electromyographic recordings. Mixed model analysis of variance with "subject" as a random factor was used during statistical analysis. Logarithmic transformation was required to achieve normalization of residuals for the duration of chewing and the relative masticatory muscles activity, but not for the chewing frequency. Results: Relative masticatory muscle activity was 2.57 times higher for the denture wearers than for the dentate subjects during chewing of model foods (P < .0001). The reduction in masticatory muscle activity from the 1st to the 10th chewing cycle was proportionally less in magnitude and occurred more gradually for denture wearers compared to dentate subjects. While chewing sequence duration increased with food fracture strength, it did not differ significantly in treatment versus dentate groups. Chewing cycle frequency did not differ between groups or with food fracture strength. Conclusions: The observed increases in relative masticatory muscle activity for denture wearers compared to the dentate subjects during oral food processing likely reflect supplemental mechanical efforts to accommodate the use of dentures for preparing a bolus for swallowing.
Uram-Tuculescu S; Cooper L F; Foegeding E A; Vinyard C J; De Kok I J; Essick G
International Journal of Prosthodontics
2015
2015-01
Journal Article
<a href="http://doi.org/10.11607/ijp.3931" target="_blank" rel="noreferrer noopener">10.11607/ijp.3931</a>
Median Cleft of the Upper Lip. A Rare Case
DeMeyer; Dentistry; face; median cleft lip; Millard; Oral Surgery & Medicine; Surgery
Median cleft lip is a midline vertical cleft through the upper lip This is a rare anomaly with very few cases described in the literature Median cleft lip has been thought to be associated with hypertelorism or hypotelorism It is caused by the failure of fusion of the medial nasal prominences In this case report, a 4 1/2-year-old girl with a median cleft is presented The patient has no other anomalies of the nose or alveolus The patient has normotelorism A shortened bifid frenulum of the upper lip is present A technique using an elliptical excision of the cleft with muscle approximation is described
Patel N P; Prasad M D
Cleft Palate-Craniofacial Journal
2010
2010-11
Journal Article
<a href="http://doi.org/10.1597/09.065" target="_blank" rel="noreferrer noopener">10.1597/09.065</a>