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Objective To assess the dental class occlusion and lateral cephalometry of children with conservatively treated Pierre Robin sequence (PRS) and to identify associations between these findings and prepalatoplasty cleft palate measurements. Study Design Retrospective cohort study. Subjects and Methods Among 22 patients with PRS, the following data were prospectively collected: demographics and preoperative cleft palate measurements. After patients reached age 6 years, an orthodontist assessed dental occlusion class and performed a lateral cephalometric analysis. PRS cephalometric data were compared with reference population values. Bivariate logistic regression was used to test the association with malocclusion class. Results are presented as odds ratios with 95% profile likelihood confidence intervals. The association between cleft measurements and cephalometric parameters was tested with Spearman's correlation ( r). Results All 22 patients had bimaxillary hypoplasia and were prone to hyperdivergency, with a 41% rate of dental class III malocclusion. An increased anterior growth of the still retrusive mandible mostly accounts for the occurrence of the class III malocclusion in PRS (class II SNB = 74.3° vs class III SNB = 77.6°, P = .04). A larger cleft at the time of the cleft repair (mean, 11 months) was associated with increased mandibular retrusion (smaller SNB angle, r = -0.5, P = .02). Conclusions The 41% rate of class III malocclusion among these conservatively treated patients needs to be considered in the choice of the initial airway approach. The future impact of early mandibular advancement will have to be determined.
This article was published in the following journal.
Name: Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery
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Objective evaluation of the efficacy of tongue lip adhesion (TLA) in the management of Robin sequence (RS).
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The study team has made the hypothesis that the intensity of the phonatory disorders (rhinolalia), and of the maxillo-mandibular growth anomalies (facial morphology), may have negative eff...
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Introduction Pierre Robin Sequence, PRS, incidence is about one hundred births per year in France. The main neonatal clinical manifestations are secondary to airway obstruction and food di...
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An autosomal recessive disorder characterized by brachygnathia and cleft palate, often associated with glossoptosis, backward and upward displacement of the larynx, and angulation of the manubrium sterni. Cleft palate makes sucking and swallowing difficult, permitting easy access of fluids into the larynx. It may appear in several syndromes or as an isolated hypoplasia. (Dorland, 27th ed)
Posterior displacement of the TONGUE toward the PHARYNX. It is often a feature in syndromes such as in PIERRE ROBIN SYNDROME and DOWN SYNDROME and associated with AIRWAY OBSTRUCTION during sleep (OBSTRUCTIVE SLEEP APNEAS).
Selective grinding of occlusal surfaces of the teeth in an effort to eliminate premature contacts and occlusal interferences; to establish optimal masticatory effectiveness, stable occlusal relationships, direction of main occlusal forces, and efficient multidirectional patterns, to improve functional relations and to induce physiologic stimulation of the masticatory system; to eliminate occlusal trauma; to eliminate abnormal muscle tension; to aid in the stabilization of orthodontic results; to treat periodontal and temporomandibular joint problems; and in restorative procedures. (From Jablonski, Dictionary of Dentistry, 1992)
Rigid or flexible appliances that overlay the occlusal surfaces of the teeth. They are used to treat clenching and bruxism and their sequelae, and to provide temporary relief from muscle or temporomandibular joint pain.
Surgical procedure to add bone to the ALVEOLAR RIDGE in children born with a CLEFT LIP and a CLEFT PALATE.
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Cleft Palate and Cleft Lip
Cleft means 'split' or 'separation', and in Cleft Palate and Lip, the palate and lip are split respectively. This occurs as a congenital abnormality because during development in the womb, the face develops in sections which fuse together...