John O. Wirthlin

Bone-Anchored Maxillary Protraction With Bollard Modified Miniplates: An Interim Study in Patients with Cleft Palate

Nicholas H. Yim, Matthew J. Parham, Ryan J. Cody, John O. Wirthlin et autres

Purpose: Patients with cleft lip and/or palate (CLP) often present with Class III malocclusions resulting from maxillary deficiency. Although orthognathic surgery can correct this, it is not performed until skeletal maturity. Bone-anchored maxillary protraction (BAMP) can be used during adolescence to stimulate …

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Effect of Material and Pad Abrasion on Shear Bond Strength of 3D‐Printed Orthodontic Brackets

Megan S. Hanson, Joe C. Ontiveros, Jeryl D. English, John O. Wirthlin et autres

OBJECTIVE: To investigate the effect of printing material and air abrasion of bracket pads on the shear bond strength of 3D-printed plastic orthodontic brackets when bonded to the enamel of extracted human teeth. MATERIALS AND METHODS: Premolar brackets were 3D-printed using the …

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Management of Bilateral Temporomandibular Joint Ankylosis and Class 2 Malocclusion in a Patient With Nager Syndrome

Andrew M. Ferry, Han Zhuang Beh, Lauren A. Truong, Rami Paul Dibbs et autres

Nager syndrome is a rare hereditary syndrome characterized by severe mandibulofacial and pre-axial upper limb anomalies. Patients with Nager syndrome often exhibit syndromic Pierre-Robin sequence secondary to their hypoplastic mandible and require mandibular distraction osteogenesis to prevent dependence on a tracheostomy or …

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Impact of COVID-19 on Cleft Surgical Care

Andrew M. Ferry, Han Zhuang Beh, Rami Paul Dibbs, Lesley W. Davies et autres

Background: Coronavirus disease 2019 (COVID-19) has greatly impacted pediatric healthcare facilities throughout the United States due to widespread case rescheduling and the implementation of supplementary COVID-19 perioperative protocols. To our knowledge, no studies have investigated the impact of COVID-19 on case volume, …

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Quantifying Free Fibula Flap Growth After Pediatric Mandibular Reconstruction

Angela S. Volk, Sylvia S.H. Riad, Katarzyna E. Kania, Lesley W. Davies et autres

INTRODUCTION: The free fibula flap (FFF) is a preferred option for adult mandibular reconstruction. Due to skeletal immaturity, its routine use in pediatric patients remains in question. Inconsistencies regarding the ability of the FFF to grow in concordance with the patients' natural …

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Quantification of Mandibular Morphology in Pierre Robin Sequence to Optimize Mandibular Distraction Osteogenesis

Angela S. Volk, Matthew J. Davis, Amit M. Narawane, Amjed Abu‐Ghname et autres

Background: Mandibular distraction osteogenesis (MDO) is the primary surgical intervention to treat airway obstruction in Pierre Robin sequence (PRS). Current morphologic studies of PRS mandibles do not translate into providing airway management decisions. We compare mandibles of infants with nonsyndromic PRS to …

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S6B-04 SESSION 6B: HFM ROBIN - PART I QUANTIFICATION OF MANDIBULAR MORPHOLOGY IN PIERRE ROBIN SEQUENCE USING NOVEL 3-DIMENSIONAL TECHNIQUES

A. Volk, John O. Wirthlin, Robert F. Dempsey, Amit M. Narawane et autres

Introduction: Pierre Robin Sequence (PRS) is described as micrognathia, glossoptosis, and airway obstruction. Various studies utilizing anthropometric analysis, 2-dimensional CT scans and/or linear measurements produced from 3-dimensional images have sought to delineate anatomical differences of the mandible in patients with PRS. Several …

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Cranial Anchored Mandible Distraction Osteogenesis

Elaine Dong, Robert F. Dempsey, John O. Wirthlin, Edward P. Buchanan

Multiple or large distance mandibular distraction osteogenesis (MDO) in the older child is often complicated by iatrogenic temporomandibular joint (TMJ) pathology. The transmission of significant force to the TMJ in these particular patients is due to the greater distance of distraction required …

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Speech Outcomes After LeFort I Advancement Among Cleft Lip and Palate Patients

Kelly P. Schultz, Tara L. Braun, Jorge Lujan-Hernandez, Kristina D. Wilson et autres

BACKGROUND: Velopharyngeal insufficiency (VPI) results from incomplete closure of the velopharyngeal (VP) sphincter with oral pressure consonants during speech. Maxillary hypoplasia is common among cleft children and often requires LeFort I advancement. This results in anterior movement of the soft palate with …

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Effect of print layer height and printer type on the accuracy of 3-dimensional printed orthodontic models

Christian S. Favero, Jeryl D. English, Benjamin E. Cozad, John O. Wirthlin et autres

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The orthodontist’s role in the management of patients with cleft lip and palate undergoing alveolar bone grafting

John O. Wirthlin

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Craniofacial Manifestations in Severe Nemaline Myopathy

Yunfeng Xue, Pilar L. Magoulas, John O. Wirthlin, Edward P. Buchanan

Nemaline myopathy (NM) is a rare congenital muscular disease characterized by the presence of rod (nemaline) bodies visualized on muscle biopsy. The disease is genetically and clinically heterogeneous, and the age of onset can vary from neonate to adult. Patients typically present …

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