ABSTRACT
INTRODUCTION: To evaluate skeletal and nasal volume changes before and after surgery in surgically assisted rapid palatal expansion (SARPE) without pterygomaxillary separation and compare the dental changes by digital model analysis and radiographic analysis. SETTING AND SAMPLE: Population A total of 18 patients (10 females and 8 males) aged 15-33 years and with completed skeletal development, who were referred to Oral and Maxillofacial Surgery Department, Dentistry Faculty, Istanbul University and who had SARPE indication were included in the study. MATERIALS AND METHODS: Skeletal changes, lower nasal volume, transverse diameters of bony nasolacrimal duct and dental changes have been evaluated by using Cone beam computed tomography (CBCT) before and 6 months after the surgery. CBCT data was determined by Mimics v.18.01. Dental changes have been also evaluated by digital model analysis program 'Shape Orthoanalyzer' and the data are compared with those obtained using CBCT. RESULTS: The results obtained from dental measurements made using CBCT and those obtained using scanning three-dimensional (3D) models were consistent with each other. CBCT demonstrated that lower anterior nasal volume and transverse diameters of bony nasolacrimal duct showed statistically significant increase before and after the surgery. CONCLUSIONS: According to the study findings, SARPE without pterygomaxillary separation was noted to be an effective procedure. Lower nasal volumes were increased and the maxilla expanded in the transverse direction in all patients. Dental evaluations that were performed in this digital model analysis also supported our findings in CBCT. Transverse diameters of the bony nasolacrimal duct were shortened at all patients.
Subject(s)
Maxilla , Palatal Expansion Technique , Adolescent , Adult , Cone-Beam Computed Tomography , Female , Humans , Male , Young AdultABSTRACT
INTRODUCTION: The purpose of this retrospective clinical study was to evaluate the indications for and the utility of reconstruction plates in the management of benign mandibular pathological lesions. The complications associated with plate use were also assessed. PATIENTS AND METHODS: The clinical and radiological data of 23 patients (16 males, 7 females) with large, benign mandibular pathologies were evaluated. During operations, reconstruction plates were used to prevent mandibular fracture or to allow for bone reconstruction after segmental or disarticulation resection. The mean follow-up time was 11.2months. RESULTS: Condylar sag was observed in one patient who had undergone disarticulation resection. A reconstruction plate was removed from one patient because of pain. A plate became exposed in one patient who had undergone a disarticulation resection. Two patients reported slight paraesthesia. Screw-loosening was observed in one patient who had received a non-locking plate. CONCLUSION: Reconstruction plates can be safely used to manage benign mandibular lesions. Preoperative bending of the plates on individualised models is useful for reducing the time required for plate adaptation during operation. Locking reconstruction plates are preferable for preventing screw-loosening. All complications can be managed with careful follow up.
