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Clinical evaluation of sinus bone graft in patients with mucous retention cyst.

Seong Beom KIM ; Pil Young YUN ; Young Kyun KIM

Maxillofacial Plastic and Reconstructive Surgery.2016;38(9):35-. doi:10.1186/s40902-016-0081-1

BACKGROUND: Mucous retention cyst refers to a cyst made by expansion due to the blockage of the salivary gland near the maxillary sinus, and it is surrounded by epithelial cells. Most of them are small; therefore, they cannot be found well and are frequently with antral polyp. The aim of this study was to evaluate the clinical prognosis of sinus bone graft in patients with mucous retention cyst. METHODS: This study was performed retrospectively on 23 patients who had sinus bone graft. Group 1 was 8 patients (10 sinuses) who had a mucous retention cyst, and group 2 was 15 patients (17 sinuses) who had no pathologic history about the maxillary sinus. For these patients, sinus bone graft was performed using the lateral approach technique. The total 51 implants were placed 6.22 weeks on the average after sinus bone graft. Sinus membrane perforation during operation, postoperative complications, marginal bone loss after restorative function, implant success rate, and survival rate were analyzed. RESULTS: There was no complication in group 1, and there were three complications in group 2. In group 2, two cases of implants failed. The types of postoperative complications consisted of two minor infections and one wound dehiscence. Two implants of total 51 implants were removed, and the survival rate of implants was 96.08 % (group 1 100 %, group 2 93.5 %). The total success rate of implants was 92.2 % (group 1 95 %, group 2 90.3 %). CONCLUSIONS: The clinical prognosis was not affected by the presence of mucous retention cyst.
Epithelial Cells ; Humans ; Maxillary Sinus ; Membranes ; Polyps ; Postoperative Complications ; Prognosis ; Retrospective Studies ; Salivary Glands ; Survival Rate ; Transplants* ; Wounds and Injuries

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Botulinum toxin related research in maxillofacial plastic and reconstructive surgery.

Tae Geon KWON

Maxillofacial Plastic and Reconstructive Surgery.2016;38(9):34-. doi:10.1186/s40902-016-0080-2

No abstract available.
Botulinum Toxins* ; Plastics*

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Early effect of Botox-A injection into the masseter muscle of rats: functional and histological evaluation.

Young Min MOON ; Young Jun KIM ; Min Keun KIM ; Seong Gon KIM ; HaeYong KWEON ; Tae Woo KIM

Maxillofacial Plastic and Reconstructive Surgery.2015;37(12):46-. doi:10.1186/s40902-015-0049-6

BACKGROUND: The purpose of this study was to evaluate the change of food intake after different dosages of botulinum toxin A (BTX) injection in the animal model. Additionally, the dimensional and histological change at 14 days after BTX injection was also evaluated. METHODS: The comparative study was performed using the BTX injection model in rats (n = 5 for each group). Group 1 was the saline-injected group. Group 2 was the 5-unit BTX-injection group to each masseter muscle. Group 3 was the 10-unit BTX-injection group to each masseter muscle. Food intake rates and body weight were checked daily before and after BTX injection until 10 days. All animals were sacrificed at 14 days after BTX injection, and the specimens underwent hematoxylin and eosin stain and immunohistochemical staining for myosin type II (MYH2). RESULTS: The recovery of food intake in groups 2 and 3 decreased significantly compared with group 1 from day 2 to day 7 and day 9 after injection (p < 0.05). The BTX-treated masseter muscles were significantly smaller than those in group 1 (p = 0.015). The immunohistochemical findings demonstrated that the expression of MYH2 was significantly higher in group 3 compared to groups 1 and 2 (p < 0.001). CONCLUSIONS: BTX injection to the masseter muscle in rats demonstrated short food-intake-rate reduction with recovery until 10 days after injection. The thickness of the masseter muscle and MYH2 expression were significantly changed according to the injected dose of BTX.
Animals ; Body Weight ; Botulinum Toxins ; Eating ; Eosine Yellowish-(YS) ; Hematoxylin ; Masseter Muscle* ; Models, Animal ; Myosin Type II ; Rats*

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Double-layered collagen graft to the radial forearm free flap donor sites without skin graft.

Tae Jun PARK ; Hong Joon KIM ; Kang Min AHN

Maxillofacial Plastic and Reconstructive Surgery.2015;37(11):45-. doi:10.1186/s40902-015-0046-9

BACKGROUND: Radial forearm free flap is the most reliable flap for intraoral soft tissue reconstruction after cancer ablation surgery. However, unesthetic scar of the donor site and the need for a second donor site for skin graft are major disadvantages of the forearm flap. The purpose of this study was to report the clinical results of double-layered collagen graft to the donor site of the forearm free flap without skin graft. METHODS: Twenty-two consecutive patients who underwent oral cancer ablation and forearm reconstruction between April 2010 and November 2013 were included in this study. Male to female ratio was 12:10, and average age was 61.0 years old (27-84). Double-layered collagen was grafted to the donor site of the forearm free flap and healed for secondary intention. Upper silicone had been trimmed at the periphery during secondary intention, and dry dressing was used. Postoperative scar healing and esthetic results and function were evaluated. RESULTS: An average follow-up period was 34.9 months. The scar area was decreased to 63.9 % in average. The complete healing was obtained between 1.5 and 3 months according to the defect size. There was no functional defect or impairment 3 months after operation. All patients were satisfied with the esthetic results. Three patients died of recurred cancer. CONCLUSIONS: Double-layered collagen graft was successfully performed in this study. Without the thigh skin graft, patients had experienced less painful postoperative healing periods and discomfort.
Bandages ; Cicatrix ; Collagen* ; Female ; Follow-Up Studies ; Forearm* ; Free Tissue Flaps* ; Humans ; Intention ; Male ; Mouth Neoplasms ; Silicon ; Silicones ; Skin* ; Thigh ; Tissue Donors* ; Transplants*

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Genioplasty using a simple CAD/CAM (computer-aided design and computer-aided manufacturing) surgical guide.

Se Ho LIM ; Moon Key KIM ; Sang Hoon KANG

Maxillofacial Plastic and Reconstructive Surgery.2015;37(11):44-. doi:10.1186/s40902-015-0044-y

BACKGROUND: The present study introduces the design and fabrication of a simple surgical guide with which to perform genioplasty. METHODS: A three-dimensional reconstruction of the patient's cranio-maxilla region was built, with a dentofacial skeletal model, then derived from CT DICOM data. A surgical simulation was performed on the maxilla and mandible, using three-dimensional cephalometry. We then simulated a full genioplasty, in silico, using the three-dimensional (3D) model of the mandible, according to the final surgical treatment plan. The simulation allowed us to design a surgical guide for genioplasty, which was then computer-rendered and 3D-printed. The manufactured surgical device was ultimately used in an actual genioplasty to guide the osteotomy and to move the cut bone segment to the intended location. RESULTS: We successfully performed the osteotomy, as planned during a genioplasty, using the computer-aided design and computer-aided manufacturing (CAD/CAM) surgical guide that we initially designed and tested using simulated surgery. CONCLUSIONS: The surgical guide that we developed proved to be a simple and practical tool with which to assist the surgeon in accurately cutting and removing bone segments, during a genioplasty surgery, as preoperatively planned during 3D surgical simulations.
Cephalometry ; Computer Simulation ; Computer-Aided Design ; Genioplasty* ; Mandible ; Maxilla ; Osteotomy

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Image-guided surgery and craniofacial applications: mastering the unseen.

James C WANG ; Laszlo NAGY ; Joshua C DEMKE

Maxillofacial Plastic and Reconstructive Surgery.2015;37(11):43-. doi:10.1186/s40902-015-0037-x

Image-guided surgery potentially enhances intraoperative safety and outcomes in a variety of craniomaxillofacial procedures. We explore the efficiency of one intraoperative navigation system in a single complex craniofacial case, review the initial and recurring costs, and estimate the added cost (e.g., additional setup time, registration). We discuss the potential challenges and benefits of utilizing image-guided surgery in our specific case and its benefits in terms of educational and teaching purposes and compare this with traditional osteotomies that rely on a surgeon's thorough understanding of anatomy coupled with tactile feedback to blindly guide the osteotome during surgery. A 13-year-old presented with untreated syndromic multi-suture synostosis, brachycephaly, severe exorbitism, and midface hypoplasia. For now, initial costs are high, recurring costs are relatively low, and there are perceived benefits of imaged-guided surgery as an excellent teaching tool for visualizing difficult and often unseen anatomy through computerized software and multi-planar real-time images.
Adolescent ; Craniosynostoses ; Humans ; Osteotomy ; Surgery, Computer-Assisted* ; Synostosis

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Glossectomy in the severe maxillofacial vascular malformation with jaw deformity: a rare case report.

Min Hyeog PARK ; Chul Man KIM ; Dong Young CHUNG ; Jun Young PAENG

Maxillofacial Plastic and Reconstructive Surgery.2015;37(11):42-. doi:10.1186/s40902-015-0043-z

In the field of oral-maxillofacial surgery, vascular malformations present in various forms. Abnormalities in the size of the tongue by vascular malformations can cause mandibular prognathism and skeletal deformity. The risk in surgical treatment for patients with vascular malformation is high, due to bleeding from vascular lesions. We report a rare case of macroglossia that was treated by partial glossectomy, resulting in an improvement in the swallowing and mastication functions in the patient. A 25-year-old male patient with severe open-bite and mandibular prognathism presented to our department for the management of macroglossia. The patient had a difficulty in food intake because of the large tongue. Orthognathic surgery was not indicated because the patient had severe jaw bone destruction and alveolar bone resorption. Therefore, the patient underwent partial glossectomy under general anesthesia. There was severe hemorrhaging during the surgery, but the bleeding was controlled by local procedures.
Adult ; Anesthesia, General ; Bone Resorption ; Congenital Abnormalities* ; Deglutition ; Eating ; Glossectomy* ; Hemorrhage ; Humans ; Jaw* ; Macroglossia ; Male ; Mastication ; Orthognathic Surgery ; Prognathism ; Tongue ; Vascular Malformations*

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Manifestation and treatment in a cleidocranial dysplasia patient with a RUNX2 (T420I) mutation.

Chaky LEE ; Hee Sup JUNG ; Jin A BAEK ; Dae Ho LEEM ; Seung O KO

Maxillofacial Plastic and Reconstructive Surgery.2015;37(11):41-. doi:10.1186/s40902-015-0042-0

Cleidocranial dysplasia is an autosomal dominant heritable skeletal disorder. The characteristic features of cleidocranial dysplasia (CCD) may include hypoplasia of the clavicle, delayed closure of frontanelles, late tooth eruption, and other skeletal disorders. This case report describes clinical and radiographic manifestations at the age of 11 and 29 of a CCD patient, investigates the mutation of core-binding factor A1 (CBFA1) based on gene analysis, and illustrates successful oral reconstruction with fixed prosthesis and dental implant after the extraction of multiple teeth.
Clavicle ; Cleidocranial Dysplasia* ; Core Binding Factors ; Dental Implants ; Humans ; Prostheses and Implants ; Tooth ; Tooth Eruption

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A clinical evaluation of botulinum toxin-A injections in the temporomandibular disorder treatment.

Hyun Suk KIM ; Pil Young YUN ; Young Kyun KIM

Maxillofacial Plastic and Reconstructive Surgery.2016;38(1):5-. doi:10.1186/s40902-016-0051-7

BACKGROUND: This study clinically evaluated the effect of botulinum toxin type A (BTX-A) in the temporomandibular disorder (TMD) treatment using Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). METHODS: A total of 21 TMD patients were recruited to be treated with BTX-A injections on the bilateral masseter and temporalis muscles and were followed up by an oral and maxillofacial surgeon highly experienced in the TMD treatment. For each patient, diagnostic data gathering were conducted according to the RDC/TMD. Characteristic pain intensity, disability points, chronic pain grade, depression index, and grade of nonspecific physical symptoms were evaluated. Wilcoxon signed-rank test was applied for statistical analysis. RESULTS: The results showed that more than half of the participants (85.7 %) had parafunctional oral habits such as bruxism or clenching. In comparison between pre- and post-treatment results, graded pain score, characteristic pain intensity, disability points, chronic pain grade, and grade of nonspecific physical symptoms showed statistically significant differences after the BTX-A injection therapy (p < 0.05). Most patients experienced collective decrease in clinical manifestations of TMD including pain relief and improved masticatory functions after the treatment. CONCLUSIONS: Within the limitation of our study, BTX-A injections in masticatory musculatures of TMD patients could be considered as a useful option for controlling complex TMD and helping its associated symptoms.
Botulinum Toxins, Type A ; Bruxism ; Chronic Pain ; Depression ; Humans ; Muscles ; Oral and Maxillofacial Surgeons ; Temporomandibular Joint Disorders*

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CAD/CAM splint based on soft tissue 3D simulation for treatment of facial asymmetry.

Kazuhiro TOMINAGA ; Manabu HABU ; Hiroki TSURUSHIMA ; Osamu TAKAHASHI ; Izumi YOSHIOKA

Maxillofacial Plastic and Reconstructive Surgery.2016;38(1):4-. doi:10.1186/s40902-016-0050-8

BACKGROUND: Most cases of facial asymmetry involve yaw deformity, and determination of the yaw correction level is very difficult. METHODS: We use three-dimensional soft tissue simulation to determine the yaw correction level. This three-dimensional simulation is based on the addition of cephalometric prediction to gradual yaw correction. Optimal yaw correction is determined visually, and an intermediate splint is fabricated with computer-aided design and computer-aided manufacturing. Application of positioning devices and the performance of horseshoe osteotomy are advisable. RESULTS: With this procedure, accurate repositioning of jaws was confirmed and patients obtained fairly good facial contour. CONCLUSIONS: This procedure is a promising method for a widespread, predictable treatment of facial asymmetry.
Computer-Aided Design ; Congenital Abnormalities ; Facial Asymmetry* ; Humans ; Jaw ; Methods ; Orthognathic Surgery ; Osteotomy ; Splints*

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