Pharyngeal airway space changes and stability following an extended LeFort-I osteotomy advancement in cleft lip and palate and non-cleft lip and palate patients: A long term comparison study.

Purpose: The aim of this study was to evaluate effects of extended maxillary advancement osteotomy on pharyngeal airway space (PAS) in mid-facial deficient cleft lip and palate (CLP) patients and mid-facial deficient non-CLP patients.

Methods: Pharyngeal airway space (PAS) of 10 CLP and 10 non-CLP patients with the mean age of 19 years 10 months was measured on digitized lateral cephalograms taken shortly before maxillary advancement operation with Quadrangular Le Fort I osteotomy (QLF-I) (T0), early post-operative, (T1) and long term post-operative (T2). Two way repeated analysis of variance, independent samples t-test and correlations tests were used for statistical analysis of airway and skeletal changes.

Remodeling of Displaced Condylar Fractures with Functional Treatment: High-Quality Radiographic Documentation in Three-Patient Series.

Treatment of condylar fractures is variable and controversial. Treatment options for management of condylar fractures include surgical and nonsurgical methods, and if a nonsurgical method is as effective as a surgical method, the former is preferred. Although plain film radiographs and functional outcomes attained through nonsurgical treatment are well established in literature, evidence of the remodeling process through detailed, high-quality imaging is lacking.

Postoperative gastrointestinal bleeding in orthognathic surgery patients: its estimated prevalence and possible association to known risk factors.

Purpose: To assess the prevalence of gastrointestinal (GI) bleeding in patients after orthognathic surgery and its relation to known risk factors.

Patient And Methods: With institutional review board approval, a single-center case series was conducted with data collected retrospectively from orthognathic surgical patients' medical records from 1990 to 2010. All patients were treated by 1 primary surgeon, were limited to 21 years or younger at the time of surgery, and had no coagulopathy.

A long-term clinical and cephalometric study of cleft lip and palate patients following intraoral maxillary quadrangular le fort I osteotomy.

Objective: To evaluate the horizontal and vertical stability of the quadrangular Le Fort I in patients with congenital cleft lip and palate.

Design: Prospective longitudinal study.

Patients: A total of 15 congenital cleft lip and palate patients treated with the maxillary quadrangular Le Fort I were enrolled.

Is autogenous abdominal fat transplantation into a large temporomandibular joint defect following removal of failed alloplastic prosthesis a definitive treatment?

Purpose: To evaluate the long-term clinical outcome after the removal of failed major alloplastic temporomandibular joint (TMJ) implants and the placement of an autologous abdominal fat graft.

Materials And Methods: A long-term clinical follow-up was performed in 4 patients who underwent removal of a failed alloplastic implant and insertion of an autologous abdominal fat graft under 1-stage surgical management. Postsurgical use of pain medication was documented and the vertical interincisal opening measurement was obtained at the follow-up visit.

Temporomandibular custom hemijoint replacement prosthesis: prospective clinical and kinematic study.

Purpose: To evaluate the clinical and functional outcomes of a custom temporomandibular hemijoint fossa/eminence implant prosthesis.

Materials And Methods: This prospective cohort study enrolled patients with osteoarthritis of the temporomandibular joint. The primary study variables were pain experience, pain intensity, chewing ability, jaw opening, joint noise, and overall satisfaction of the surgical outcome at 3, 6, and 13 months after surgery.

Metastasizing (malignant) ameloblastoma: review of a unique histopathologic entity and report of Mayo Clinic experience.

Purpose: To provide a comprehensive review of metastasizing (malignant) ameloblastoma, establish a new baseline of valid cases using histologic criteria and minimum documentation, and report 3 cases from the Mayo Clinic files.

Patients And Methods: Ninety-eight original reports of "metastasizing," "malignant," or "atypical" ameloblastoma were reviewed. The following data were gathered for reports that demonstrated well-differentiated ameloblastoma at the metastatic site: gender, ethnicity, age at time of primary tumor diagnosis, histologic pattern of primary tumor, anatomic sites of primary and metastatic tumors, interval from diagnosis of primary to diagnosis of metastasis, number of recurrences preceding metastasis, treatment responses to radiation and/or chemotherapy, presence of hypercalcemia, and length of survival after metastasis.

Surgical management of primary chronic osteomyelitis: a long-term retrospective analysis.

Purpose: The purpose of this study is to present an extensive review of primary chronic osteomyelitis (PCO) and present long-term treatment results in 4 patients.

Patients And Methods: This is a retrospective case study analysis of 4 patients with documented PCO who were treated by a standardized surgical technique by 1 surgeon and were followed clinically and radiographically for a mean of 22 years.

Results: Based on follow-up visits to date and correspondence to the surgeon who treated these patients, there have been no radiographic recurrences of PCO in 4 patients followed 5, 23, 26, and 34 years, respectively.

Surgical management of advanced osteoarthritis of the temporomandibular joint with metal fossa-eminence hemijoint replacement: 10-year retrospective study.

Purpose: To evaluate the surgical outcomes and clinical experience of the treatment of degenerative osteoarthritis of the temporomandibular joint with metal fossa-eminence hemijoint replacement.

Materials And Methods: A retrospective chart review showed 99 patients (94 females and 5 males) who underwent treatment of degenerative joint disease with hemijoint replacement surgery, including data on 141 operated joints (57 unilateral, and 42 bilateral). A visual analog scale (VAS) patient-response questionnaire with directives was mailed to the 99 patients.

Accuracy and precision of a method to study kinematics of the temporomandibular joint: combination of motion data and CT imaging.

The purpose of the study was to test the precision and accuracy of a method used to track selected landmarks during motion of the temporomandibular joint (TMJ). A precision phantom device was constructed and relative motions between two rigid bodies on the phantom device were measured using optoelectronic (OE) and electromagnetic (EM) motion tracking devices. The motion recordings were also combined with a 3D CT image for each type of motion tracking system (EM+CT and OE+CT) to mimic methods used in previous studies.

Kinematic assessment of the temporomandibular joint before and after partial metal fossa eminence replacement surgery: a prospective study.

Purpose: This study compared the functional kinematic outcome of the temporomandibular joint (TMJ) in patients with end-stage TMJ osteoarthritis before and after TMJ hemijoint replacement surgery.

Materials And Methods: Fourteen patients (15 joints), with a mean age of 46.1 years, undergoing metal fossa eminence hemijoint replacement surgery, participated in this study.

A method for quantifying condylar motion in patients with osteoarthritis using an electromagnetic tracking device and computed tomography imaging.

Purpose: The purpose of this study was to develop a method to accurately study the kinematic changes of the temporomandibular joint (TMJ) in patients treated with hemijoint implant reconstruction for dysfunction of advanced degenerative osteoarthritis.

Materials And Methods: Mandibular kinematic motion data and patient-specific computed tomography (CT) data were acquired. Patients were fitted with custom dental stents that were embedded with metal markers to link the mandibular kinematics data with the 3-dimensional TMJ CT images.

Superoxide dismutase activity in synovial fluids in patients with temporomandibular joint internal derangement.

Purpose: To measure the activity of superoxide dismutase (SOD) in the synovial fluid of patients with temporomandibular joint internal derangement and to show the relationship between the activity of SOD and the severity of the disease.

Materials And Methods: Twenty patients with internal derangement were classified according to Wilkes by clinical radiological examinations. SOD activity was measured by the method based on nitrobluetetrazolium reduction rate.

Kinematic study of the temporomandibular joint in normal subjects and patients following unilateral temporomandibular joint arthrotomy with metal fossa-eminence partial joint replacement.

Purpose: The primary purpose of this study is to quantify the kinematics of the temporomandibular joint (TMJ) in patients following unilateral TMJ arthrotomy with metal fossa-eminence partial joint replacement and compare them with TMJ kinematics of healthy individuals.

Materials And Methods: Fourteen healthy volunteers and 13 female surgical patients (minimum 4 years postoperative) participated in this study. An electromagnetic tracking device was used to record the kinematics of the mandible relative to temporal bone during opening-closing, protrusive, and lateral movements.

Analysis of death certification in patients with early stage oral cavity squamous cell carcinoma.

Purpose: Although patients with T1 oral cavity carcinoma have a generally good prognosis, there is a significant burden of patients that have locoregional recurrence and mortality from early stage disease. The aim of this study was to investigate the specific cause of death in patients with T1N0M0 oral cavity squamous cell carcinoma (OCSCC) by analysis of death certification.

Patients And Methods: Patients were identified with T1 OCSCC treated over a 15-year period between 1986 to 2001 from the Mayo Clinic Tumor Registry.

Mayo clinic consensus statement for the use of bisphosphonates in multiple myeloma.

Bisphosphonates are effective in the prevention and treatment of bone disease in multiple myeloma (MM). Osteonecrosis of the jaw is Increasingly recognized as a serious complication of long-term bisphosphonate therapy. Issues such as the choice of bisphosphonate and duration of therapy have become the subject of intense debate given patient safety concerns.

Kinematic study of the mandible using an electromagnetic tracking device and custom dental appliance: introducing a new technique.

The purpose of this study is to introduce a new technique for recording the kinematics of the temporomandibular joint and incisors, using an electromagnetic tracking device and custom dental appliance. Five normal subjects took part in this kinematic study (4 females, 1 male, mean age of 34.8 years).

Malocclusion associated with osteocartilaginous loose bodies of the temporomandibular joint.

Background: The authors review the literature regarding osteocartilaginous loose bodies (that is, secondary synovial chondrometaplasia or secondary synovial chondromatosis) in the temporomandibular joint (TMJ), present a case report and stress the importance of early diagnosis.

Case Description: A 57-year-old woman was referred to an orthodontist with a chief complaint of bite changes that took place over several years as the patient intermittently experienced TMJ problems. The authors noted radiopacities around the right TMJ space on a panoramic radiograph.

Stability of the Le Fort I osteotomy with anterior internal fixation alone: a case series.

Purpose: The purpose of this case series was to evaluate the late postsurgical stability of the Le Fort I osteotomy with anterior internal fixation alone and no posterior zygomaticomaxillary buttress internal fixation.

Patients And Methods: Sixty patients with maxillary vertical hyperplasia and mandibular retrognathia underwent a 1-piece Le Fort I osteotomy of the maxilla with superior repositioning and advancement or setback. A bilateral sagittal split ramus osteotomy for mandibular advancement was also performed in 22 patients.

Intraoral maxillary quadrangular Le Fort II osteotomy: a long-term follow-up study.

Purpose: This study evaluated the clinical outcome and skeletal stability of the intraoral maxillary quadrangular Le Fort II osteotomy (IQLO) with wire or rigid internal fixation following horizontal maxillary advancement.

Patients And Methods: All 21 patients who had undergone the IQLO were analyzed for operation time, blood loss, length of hospitalization, intraoperative and postoperative complications, and radiographic abnormalities. Lateral cephalometric radiographs were taken preoperatively (T1), postoperatively (T2) and late postoperatively (T3) to analyze skeletal movement.

Surgical management of advanced degenerative arthritis of temporomandibular joint with metal fossa-eminence hemijoint replacement prosthesis: an 8-year retrospective pilot study.

Purpose: The purpose of this study was 2-fold: to evaluate the surgical outcome and surgical morbidity of the temporomandibular joint (TMJ) metal fossa-eminence hemijoint prosthesis replacement, implanted in patients with degenerative arthritis, and to establish whether future, more rigorous clinical trial assessment of the hemijoint replacement is warranted.

Materials And Methods: Eighty-four patients (79 females and 5 males) involving 108 joints (60 unilateral, 24 bilateral) were operated on, and 112 joint metal fossa-eminence prostheses were placed. Information was gathered from patient response questionnaires and clinicoradiographic medical chart review.

Transverse displacement of the proximal segment after bilateral sagittal osteotomy.

Purpose: The aim of the present investigation was to evaluate the transverse displacement of the proximal segment and ramus rotation after a bilateral sagittal osteotomy (BSO) with rigid internal fixation (RIF) using bicortical LAG screws.

Patients And Methods: We conducted a retrospective review of 37 patients (14 males and 23 females, age range of 14 to 55 years) who underwent a mandibular advancement with BSO and RIF. Posteroanterior and lateral cephalometric radiographs were obtained 1 to 8 weeks before and 1 to 4 weeks after surgery.

The influence of mandibular dentition on implant failures in bone-grafted edentulous maxillae.

Purpose: To evaluate the influence of mandibular dentition on the performance of maxillary implants prior to definitive prosthesis attachment in maxillae that have been reconstructed with autogenous bone grafts.

Materials And Methods: A retrospective review of 90 consecutive patients, 31 men and 59 women, with a mean age of 57.4 years, was conducted.