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Chiara Pavoni, Valeria Paoloni, Luis Tomas Huanca Ghislanzoni, Giuseppina Laganà, Paola Cozza
OBJECTIVE: To analyze variations in palatal morphology in subjects presenting unilaterally impacted maxillary permanent central incisors compared with a control group of subjects without eruption anomalies using a three-dimensional (3D) analysis. MATERIALS AND METHODS: Twenty-six white subjects (10 girls and 16 boys; mean age 9.5 ± 1.5 years) with unilaterally impacted maxillary permanent central incisors (impacted incisor group [IIG]) were compared with a control group (CG) of 26 subjects (14 girls and 12 boys, mean age 8...
October 20, 2016: Angle Orthodontist
Neelam Noel Andrade, Paul C Mathai, Vyankatesh Sahu, Neha Aggarwal, Tanvi Andrade
Melanotic neuroectodermal tumour of infancy (MNTI) is rare, rapidly growing, pigmented neoplasm of neural crest origin. It is generally accepted as a benign tumour despite of its rapid and locally destructive growth. It primarily affects the maxilla of infants during the first year of life. Surgical excision is considered as the treatment of choice. The recurrence rate varies between 10% and 15%, and malignant behaviour has been reported in 6.5% of cases. We report a case of MNTI, associated with an erupted primary tooth in a 5-month-old male child...
September 2016: Journal of Oral Biology and Craniofacial Research
H Oda, M Sandou, C-M Lin, M Kamata, T Kawata
AIM: The reported effects of Bionator treatment in patients with mandibular retrognathism are conflicting. This study evaluated the changes in craniofacial morphology resulting from treatment with a Bionator, based on measurement percentiles previously reported, to clarify the mechanism of the effect of this commonly used functional device. MATERIALS AND METHODS: Study Design: Retrospective. SETTING: A private orthodontic clinic. PARTICIPANTS: Forty-two children (mean age, 10...
September 2016: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
Yohei Sotsuka, Toshihiro Fujiwara, Kenichiro Kawai, Soh Nishimoto, Masao Kakibuchi
Recent reports have shown successful transfer of vascularized fibular flap in bisphosphonate-induced mandibular osteonecrosis. We present a case of a 50-year-old patient who presented with bisphosphonate-related osteonecrosis of bilateral maxilla, which is reconstructed using a fibular flap.
September 2016: Plastic and Reconstructive Surgery. Global Open
Hye-Jin Tak, Tae-Jin Park, Piao Zhengguo, Sang-Hwy Lee
BACKGROUND: Syngnathia is a congenital craniofacial disorder characterized by bony or soft tissue fusion of upper and lower jaws. Previous studies suggested some causative signals, such as Foxc1 or Bmp4, cause the disruption of maxillomandibular identity, but their location and the interactive signals involved remain unexplored. We thus wanted to examine the embryonic origin of syngnathia based on the assumption that it may be located at the separation between the maxillary and mandibular processes...
October 18, 2016: Developmental Dynamics: An Official Publication of the American Association of Anatomists
Christopher M Runyan, Vishal Sharma, David A Staffenberg, Jamie P Levine, Lawrence E Brecht, Leonard H Wexler, David L Hirsch
BACKGROUND: Reconstruction of maxillary defects following tumor extirpation is challenging because of combined aesthetic and functional roles of the maxilla. One-stage reconstruction combining osseous free flaps with immediate osseointegrated implants are becoming the standard for mandibular defects, and have similar potential for maxillary reconstruction. METHODS: A woman with maxillary Ewing sarcoma successfully treated at age 9 with neoadjuvant chemotherapy, right hemimaxillectomy, and obturator prosthetic reconstruction presented for definitive reconstruction, complaining of poor obturator fit, and hypernasality...
October 14, 2016: Journal of Craniofacial Surgery
Pâmela Letícia Dos Santos, Gustavo Henrique Souza Silva, Fernanda Rayssa Da Silva Pereira, Raquel Damazia da Silva, Mirella Lindoso Gomes Campos, Thiago Borges Mattos, Jéssica Lemos Gulinelli
As life expectancy increases, a larger number of elderly people require dental health care attention for implant-supported rehabilitation, with the aim of restoring the function and aesthetics of the oral cavity. Most of these patients have lost their teeth long time ago, causing a severe bone resorption and maxillary sinus pneumatization. Therefore, the current study aims to demonstrate, through the description of the clinical case, the treatment with zygomatic implants as an option for treating severely atrophic maxillas...
October 14, 2016: Journal of Craniofacial Surgery
Simone Schulz, Bernd Koos, Kathrin Duske, Franka Stahl
OBJECTIVES: The purpose of this work was to employ both cephalometric and tensor analysis in characterizing the skeletal changes experienced by patients with Angle Class II/1 malocclusion during functional orthodontic treatment with the functional regulator type II. METHODS: A total of 23 patients with Class II/1 malocclusion based on lateral cephalograms obtained before and after treatment with the functional regulator type II were analyzed. Another 23 patients with Angle Class II/1 malocclusion who had not undergone treatment were included as controls...
October 17, 2016: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
H Wang, P J Lv, Y Wang, Y C Sun
OBJECTIVE: To quantitatively evaluate the assembly precision of fabricating complete denture by computer numerical control (CNC) in manufacturing dentition and baseplate separately plus adhesive molding. METHODS: The 3D surface data of a standard edentulous maxilla plaster cast model and the temporary base-plate were obtained using an Activity 880 3D scanner. The data (data1) of a complete denture were designed using a set of computer aided design (CAD) software developed by the research group of this study...
October 18, 2016: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
Hideyuki Suenaga, Asako Taniguchi, Kazumichi Yonenaga, Kazuto Hoshi, Tsuyoshi Takato
INTRODUCTION: Computer-assisted preoperative simulation surgery is employed to plan and interact with the 3D images during the orthognathic procedure. It is useful for positioning and fixation of maxilla by a plate. We report a case of maxillary retrusion by a bilateral cleft lip and palate, in which a 2-stage orthognathic procedure (maxillary advancement by distraction technique and mandibular setback surgery) was performed following a computer-assisted preoperative simulation planning to achieve the positioning and fixation of the plate...
October 4, 2016: International Journal of Surgery Case Reports
Roberto Marra, Alessandro Acocella, Rispoli Alessandra, Scott D Ganz, Andrea Blasi
OBJECTIVE: The purpose of this report is to compare satisfaction of patients rehabilitated with full-mouth fixed prostheses using computer-aided flapless implant placement and immediate loading with patients rehabilitated with conventional removable prostheses. MATERIALS AND METHODS: The study included 30 consecutive fully edentulous patients who received 312 implants and 30 matched controls treated with conventional removable prostheses. Mandible and maxilla were treated in the same surgical session with computer-guided flapless approach using NobelGuide protocol...
October 4, 2016: Implant Dentistry
Mohammed Alshehri, Fahad Alshehri
PURPOSE: The aim of this review was to assess the effect of implant shape (tapered vs cylindrical) on the survival of dental implants placed in the posterior maxilla. METHODS: Databases were searched from 1977 up to and including February 2015 using various key words. Only original clinical studies were included. Experimental studies, letters to the editor, review articles, case reports, and unpublished literature were excluded. The pattern of the present review was customized to mainly summarize the relevant information...
October 4, 2016: Implant Dentistry
Takahiro Kaneko, Satoshi Nakamura, Shunsuke Hino, Norio Horie, Tetsuo Shimoyama
BACKGROUND: Sinus lift is a bone augmentation procedure that improves the alveolar crest height in an atrophic posterior maxilla. However, the regenerated bone volume can vary and generally has a tendency to decrease after sinus operation. This article describes nongrafted maxillary sinus lift using a bioresorbable unsintered hydroxyapatite combined with poly L-lactide (HA/PLLA) mesh plate device and dental implant placement in an atrophic posterior maxilla, after which continuous bone gain was observed around the implant apex during a postoperative follow-up period of 3 years...
December 2016: Int J Implant Dent
Michel Dard, Makoto Shiota, Minoru Sanda, Yasutomo Yajima, Hideshi Sekine, Shohei Kasugai
BACKGROUND: The aim of the study was to evaluate whether early loading of implants with a chemically modified sandblasted, large-grit, acid-etched (SLA) (SLActive®) surface was non-inferior to conventional loading in terms of change in crestal bone level. METHODS: This was a randomized, controlled, multicenter study. Patients requiring single-tooth rehabilitation in the posterior maxilla or mandible received implants and were randomized to receive a provisional restoration in occlusal load after 25 ± 3 days (early loading) or after 13 ± 1 weeks (conventional loading)...
December 2016: Int J Implant Dent
Jan Wolff, K Hakki Karagozoglu, Jochen H Bretschneider, Tymour Forouzanfar, Engelbert A J M Schulten
Dental implants have been in routine clinical use for over three decades and are a predictable treatment modality. However, as with all other aspects of dentistry, complications occur. A 50-year-old female patient with complaints of a long ongoing unpleasant altered nasal airflow presented herself at the VU University Medical Center Amsterdam. Visual inspection of the right nasal cavity revealed that the apical part of a dental implant placed in the upper right first incisor region had perforated the nasal floor and was partially protruding into the nasal cavity...
December 2016: Int J Implant Dent
Viviane Rozeira Crivellaro, João César Zielak, Tatiana Miranda Deliberador, Naylin Danyele de Oliveira, Felipe Rychuv Santos, Carmen Lucia Mueller Storrer
Rehabilitation of edentulous posterior maxilla with implant-supported prostheses frequently presents a challenge to dentists. This is due to insufficient bone within the region, in addition to other limiting factors such as anatomical pneumatization of the maxillary sinus. Thus, grafting of the maxillary sinus is a common procedure used to counteract these problems. Regardless of the type of biomaterial used, the success of the procedure is dependent on the formation of high-quality bone. Therefore, vascularization is a key factor for successful grafting and for the long-term maintenance of the treatment...
December 2016: Int J Implant Dent
P P T Araújo, S A Sousa, V B S Diniz, P P Gomes, J S P da Silva, A R Germano
BACKGROUND: This study aimed to evaluate patients undergoing placement of zygomatic implants by Stella and Warner's technique, considering the survival rate of conventional and zygomatic implants, and assess the health of the maxillary sinuses and the level of patient satisfaction. METHODS: In this retrospective cohort study, 28 patients had received a combination of conventional and zygomatic implants (group I) and 14 were rehabilitated with only conventional implants (group II)...
December 2016: Int J Implant Dent
Miriam Ting, Matthew Palermo, David P Donatelli, John P Gaughan, Jon B Suzuki, Steven R Jefferies
The purposes of the study are to study the implant survival of the wide-diameter implant and to analyze if the length, the implant surface, or the placement location has any effect on its survival. Electronic databases were searched from inception to Dec 2014. Studies included in the review had implants placed in areas of adequate bone width and had clear inclusion and exclusion criteria for patient selection. Immediately placed and immediately loaded implants were excluded. A meta-analysis was done using the "random effects" model on the included studies...
December 2015: Int J Implant Dent
Daisuke Ueno, Jayanetti Asiri Jayawardena, Takashi Kurokawa
Soft tissue dehiscence around dental implant has frequently been observed and it may lead to poor oral hygiene, especially around crowns that exhibit contours with prominent convexity. The present case demonstrates a peri-implant mucosal dehiscence coverage with modified semilunar coronary positioned flap (CPF) in #15 and 16. A semilunar partial-thickness incision was performed 7-10 mm apical from the facial gingival margin. Then, intrasulcular partial-thickness incision was tunneled to the semilunar incision...
December 2015: Int J Implant Dent
Masayuki Fukuda, Satoru Matsunaga, Kento Odaka, Yuuya Oomine, Masaaki Kasahara, Masahito Yamamoto, Shinichi Abe
BACKGROUND: The purpose of this study was to reveal the structural properties that need to be considered in dental implant treatment by investigating differences between dentulous and edentulous maxillae in the three-dimensional (3D) microstructure of the incisive canals (ICs) and their surrounding bone. METHODS: A total of 40 maxillary bones comprising 20 dentulous maxillae and 20 edentulous maxillae were imaged by micro-CT for 3D observation and measurement of the IC and alveolar bone in the anterior region of the IC...
December 2015: Int J Implant Dent
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