ABSTRACT
<p><b>OBJECTIVE</b>This study analyzed the alveolar changes of complete unilateral cleft lip (UCCL) patients after pre-surgical nasoalveolar molding (PNAM) treatment using a three-dimensional method.</p><p><b>METHODS</b>Palate impressions of thirty UCCL patients who underwent PNAM treatment in the Affiliated Stomatology Hospital of Guangxi Medical University were taken pre- and post-PNAM. The plaster impressions were scanned using cone beam computed tomography (CBCT). The DICOM files were exported and 3D models reconstructed in Mimics 15.0. The following parameters were analyzed in SPSS 17.0: cleft alveolar gap width, alveolar arch end width, upper lip frenulum-median plane distance, alveolar shift distance, and length of alveolar section.</p><p><b>RESULTS</b>After PNAM treatment, the cleft alveolar gap width and upper lip frenulum-median plane distance decreased significantly (P<0.05). No statistically significant change was observed in the alveolar arch end width (P>0.05). Alveolar shift distances for both sides increased significantly (P<0.05), and the shift distance of major alveolar sec-tion had a more significant increase than the minor alveolar section. The lengths of the alveolar section of both sides increased significantly (P<0.05) with the length of the major alveolar section increasing more significantly than the minor alveolar section.</p><p><b>CONCLUSIONS</b>The impression-CBCT method supply accurate three-dimensional data of the alveolar process. The PNAM treatment can significantly correct alveolar deformity and improve appearance.</p>
Subject(s)
Humans , Alveolar Process , Cleft Lip , Cleft Palate , Hospitals , Preoperative Care , UniversitiesABSTRACT
RESUMEN En este trabajo presentamos nuestra experiencia en el tratamiento quirúrgico de 10 pacientes con Labio leporino unilateral y al mismo tiempo, el abordaje y corrección de la deformidad nasal presente en casi todos los casos. El tratamiento incluyó disecar delicadas estructuras anatómicas del labio y nariz para conseguir realinear elementos distorsionados y teniendo como meta conseguir una apariencia facial normal.
ABSTRACT In this work we present our experience in the surgical treatment of patient with Unilateral Cleft Lip and also, at the same time, the approach and correction of the nasal deformity present in almost all the cases. The treatment includes to dissect delicate anatomical structures of the lip and nose and thus achieve a realignment of the distorted elements and to reach a normal facial appearance.
ABSTRACT
Objective To explore a faster and more precise method to establish a 3-dimensional (3 D) finite element model of maxillary in human complete unilateral cleft lip and palate. Methods The surface of the model was created using Materialists Interactive Medical Image Control System (Mimics) software to deal with Dicom standard files obtained by scanning the cranium of the patient with multi-slice helical CT. The 3D finite element model for complete unilateral cleft lip and plate in maxillary was established by Ansys software. Results A 3D finite element model of maxillary in human complete unilateral cleft lip and palate was constructed with 27 405 units and 26 876 nodes. Conclusion The combination of Mimics software, Geomagic studio software, Ansys software, and spiral CT is able to create a 3D finite element counter model, which provides a faster and more valid method to study complete unilateral cleft lip and palate.