Journal of Maxillofacial & Oral Surgery最新文献

Purpose: To determine the positional variations of the greater palatine foramen in different facial skeletal relationships and discuss its surgical implications on the Trimble's modification of Lefort I osteotomy.

Materials and methods: This retrospective study examined 50 computed tomography scans of patients a total of 100 sides. The sample was divided into four groups: Class 1, Class 2, Class 3 malocclusion and Unilateral cleft lip and palate). The outcome variables included the distance between anterior, middle and posterior points of the GPF to the distal of second molar and variables to assess relative position of the GPF to the posterior maxilla. Outcome measures were to demonstrate intra- and intergroup variability.

Results: Fifty patients (100 sides) were divided into four groups. This included 23 males and 27 females with a mean age of 24.1 years. Significant intergroup variability was observed between all the parameters that demonstrate the relative position of the GPF to (i) the maxillary second molar and (ii) the posterior maxilla. The analysis revealed that the GPF was positioned significantly anterior in Class 2 patients when compared with Class 3 patients.

Conclusion: The GPF exhibits significant positional variability in different facial skeletal relationships which should be borne in mind while designing and performing the Trimble's modification of the Lefort 1 osteotomy.

Objective: This study is intended to review data pertaining to patient satisfaction following orthognathic surgery through a systematic literature survey.

Methods and materials: An electronic search was done on Medline, EMBASE and CENTRAL databases. The inclusion criteria considered were as follows: (1) assessment of patients' satisfaction, (2) one-stage orthognathic surgery, and (3) follow-up period of 8 weeks or more in English literature. The exclusion criteria considered were as follows: (1) presence of craniofacial syndromes, cleft lip and palate or traumatic injuries, (2) previous facial surgery, and (3) psychological problems before surgery. The data were extracted and analyzed under three categories: function, esthetics and overall satisfaction.

Results: Eighteen studies met the inclusion criteria. Esthetic and function were improved in majority of patients; however, it was not possible to assess the overall satisfaction levels statistically. Overall satisfaction analysis revealed that 70-87% of patients were satisfied, while nearly 15% of patients were dissatisfied with the treatment outcome.

Conclusion: Most of the patients were satisfied with the surgical outcome. However, satisfaction seemed to be multifactorial and it was not possible to predict satisfaction prior to the surgery.

Introduction: Late presentations of post-traumatic residual orbital roof deformities ensuing from old, unaddressed orbital injuries, can be extremely challenging to manage and quite complicated to correct, owing to proximity of the brain and frontal sinus, malunion or bony fusion of the displaced, delicate orbital fracture fragments, necrosis of entrapped extraocular muscles and progressive intraorbital soft tissue fibrosis and adhesions. There exists a paucity in literature on delayed repair of displaced and comminuted orbital roof fractures and late reconstruction of the three-dimensional architecture of the orbital frame and internal orbit.

Aim & objectives: To present an unusual case of severe post-traumatic residual orbital roof deformity, resulting in longstanding aesthetic disfigurement and persisting functional deficits, and its successful management.

Material & methods: The patient had sustained orbital injuries sixteen months ago, on being punched in the face at a boxing tournament. The increased orbital volume produced by an impure blowout fracture of the left orbital roof, with comminution of the upper and lower orbital rims, had resulted in considerable cosmetic deformity, discomfort as well as functional debility, all of which were successfully and efficaciously managed by an innovative use of a Titanium Orbital Plate for orbital roof reconstruction.

Discussion: Overlooked, undetected or ignored derangements in intraorbital volume and contour, can lead to severe cosmetic disfigurement in the form of enophthalmos, hypoglobus, entropion, telecanthus, palpebral fissure width narrowing and ptosis; in addition to crippling functional deficits, such as diplopia, blurred vision, levator dysfunction, restricted ocular motility and reduced visual range and acuity.

Results & conclusions: An innovative Titanium mesh orbitoplasty enabled achievement of both, the aesthetic and functional goals of reconstruction of the distorted bony orbit, with successful correction of severe functional and aesthetic deficits.

Background: Parry-Romberg syndrome (PRS) is an enigmatic and acquired degenerative condition. It is characterized by a gradual and progressive facial hemiatrophy, after which facial deformities appear unexpectedly in a stable state. The degree of disfigurement depends on tissue involvement, illness onset, and duration. Nowadays, non-invasive treatments with lower morbidity, such as structured fat grafting (SFG) are preferred over traditional operations such as free flaps and bone grafts. However, for severe cases of PRS, multiple sessions of SFG are required.

Case study: Despite the therapeutic failure that a 20-year-old lady had suffered after five previous conventional surgical procedures, the outcome was successful after only one surgical therapy employing a particular combination of SFG and malar silicone elastomers implant (SI).

Conclusion: The author highlights the interest in a combination of non-invasive procedures using SFG and malar augmentation with SI to repair large volume loss while improving symmetry and skin texture. Otherwise, the role of adipose-derived stem cells in fat survival is crucial and should be the focus of future studies and the key to technological advancement.

Objective: Le Fort I osteotomy (LF-IO) is widely used for the correction of dentofacial deformities, which may cause changes in the postoperative nasal septum (NS). The objective of this study was to evaluate the effects of LF-IO on the NS deviation and to determine whether the NS was affected by differences in the direction of maxilla movement.

Materials and methods: A retrospective study including 57 patients who underwent LF-IO and received cone beam computed tomography (CBCT) preoperatively and 6-12 months postoperative evaluation was performed. The NS angle of each patient was measured both pre- and postoperatively in the two coronal sections (nasion and ostium levels). The patients were divided into five paired groups and calculated. Group 1 to 4 were divided depending on the differences in the direction of maxilla movement (Group 1. Impaction ≥ 5 mm vs. Impaction < 5 mm; Group 2. Anterior movement vs. Non-anterior movement; Group 3. Impaction symmetry vs. Impaction asymmetry; and Group 4. Impaction vs. Inferior repositioning). Group 5 was divided as One-piece osteotomy vs. Multi-segmental osteotomy.

Results: The mean NS angles at both nasion and ostium levels of all patients were significant increased after LF-IO. However, there were no statistical significant differences of the five paired groups.

Conclusions: LF-IO osteotomy influenced increasing of the NS deviation at both the nasion and ostium levels. However, differences in the direction of the maxilla movement and maxilla segmentation showed no statistically significant changes.