نود و سومین کنگره ارتودنتیست های اروپا

نود و سومین کنگره ارتودنتیستهای اروپا در شهر Mountrex در کشور سویس در ماه June سال 2017 برگزار گردید و دکتر عبدالرضا جمیلیان مقالات زیررا در این کنگره ارایه نمودند:

1-SURGICALLY ASSISTED MAXILLARY PROTRACTION VERSUS LE FORT 1 OSTEOTOMY IN CLEFT LIP AND PALATE PATIENTS
Abdolreza Jamilian, Sara Eslami, Department of Orthodontics, Tehran Dental Branch, Cranio Maxillofacial Center, Islamic Azad University, Tehran, Iran

AIM: Surgically assisted maxillary protraction is rapidly becoming a mainstream surgical technique for correction of maxillary deficiency. Maxillary constriction is a common finding in cleft palate patients. The aim of this study was to compare the results of surgically assisted maxillary protraction with a conventional Le Fort 1 osteotomy in maxillary advancement of cleft lip and palate patients (CLP). SUBJECTS AND METHOD: All the unilateral CLP patients had a skeletal Class III malocclusion with an ANB of ≤ 0° and a Wits of ≤ 0° on the initial lateral cephalograms and a concave profile with no facial asymmetry. The surgically assisted group consisted of 10 subjects (7 males, 3 females) with a mean age of 21.2 (SD 4.2) years. In these patients, a tooth borne distraction device which exerted force anteroposteriorly was cemented after mobilization of the maxilla. After a latency period of 7 days, the distractor was activated twice daily by a total amount of 0.5 mm per day. The activation was continued for 3 weeks. After an 8-week consolidation period, the distraction appliance was removed. Cephalograms of surgically assisted patients were obtained at the start of distraction and at the end of consolidation. The Le Fort 1 group consisted of 11 subjects (6 males, 5 females) with a mean age of 22.3 (SD 3.7) years. All Le Fort 1 patients underwent maxillary advancement. Pre- and post-surgical lateral cephalograms were obtained. T- and paired t-tests were used to evaluate the data. RESULTS: At the end of treatment, the SNA angle of the Le Fort 1 patients increased by 5.5 degrees (SD 2.3°; P< 0.001) while that of the surgically assisted patients increased by 3.4 degrees (SD 2°; P < 0.001). CONCLUSIONS: Current evidence suggests that both a conventional Le Fort 1 and a tooth-borne osteogenic distraction device can effectively advance the maxilla forward in patients with a CLP. In the latter technique, surgery is simple, and custom-made intraoral devices are easy to handle with minimal discomfort for the patients.
2- SYSTEMATIC REVIEW OF ORTHOPAEDIC TREATMENT FOR CLASS III MALOCCLUSION: OVERVIEW OF SYSTEMATIC REVIEWS
Abdolreza Jamilian, Rosangela Cannavale, MariaGrazia Piancino, Sara Eslami, Letizia Perillo, Department of Orthodontics, Tehran Dental Branch, Implant research center and Craniomaxillofacial research center, Islamic Azad University, Tehran, Iran, Multidisciplinary Department of Medical-Surgical and Dental Specialties, Second University of Naples and 3Department of Surgical Sciences, University of Turin, Italy

AIM: In an overview of systematic reviews to investigate methodological quality and outcome of current systematic reviews reporting on orthopaedic treatment for Class III malocclusions. MATERIALS AND METHOD: Computerized and manual searches were performed in Medline, Google Scholar, Cochrane Library, Embase, Lilacs, SciELO, American Journal of Orthodontics and Dentofacial Orthopedics, Angle Orthodontist, European Journal of Orthodontics, Journal of Orthodontics, Conference abstracts and grey literature. No restrictions were set on language or date of publication. The search covered the starting date of the relevant databases until April 30, 2015. MeSH terms and free-text terms included ‘malocclusion’, ‘Angle Class III’, ‘orthodontic appliances’, ‘functional’, facemask, review, and meta-analysis. Screening of eligible studies, assessment of the methodological quality of the systematic reviews and data extraction were conducted in duplicate and independently by two reviewers. Methodological quality was assessed using the assessment of multiple systematic reviews (AMSTAR). RESULTS: A total of 222 studies were retrieved and after removal of duplicates, irrelevant studies, literature reviews and surgical approach treatments, 14 systematic reviews and/or meta-analyses were included for qualitative synthesis. The mean AMSTAR score was 7.7/11 with a range of 3-10. There was evidence to demonstrate that facemask therapy can move the maxilla forward whilst causing a backward rotation of the mandible and increased face height. There was also some evidence of mandibular growth retardation with chin cup therapy. CONCLUSIONS: Orthopaedic appliances can improve a Class III malocclusion in growing patients over the short-term; however, each appliance has a characteristic effect on the underlying skeletal pattern. 3-ANALYSIS OF CHANGES IN HUMAN PERIODONTAL LIGAMENT STEAM CELLS AND DENTAL PULP STEM CELLS BY LOW LEVEL LASER THERAPY: A REVIEW AND NEW PERSPECTIVES

3-ANALYSIS OF CHANGES IN HUMAN PERIODONTAL LIGAMENT STEAM CELLS AND DENTAL PULP STEM CELLS BY LOW LEVEL LASER THERAPY: A REVIEW AND NEW PERSPECTIVES
Michele Severino, Gianluca Del Vecchio, Carmelo Cimmino, Abdolreza Jamilian, Letizia Perillo, Multidisciplinary Department of Medical-Surgical and Dental Specialties, Orthodontic Division, University of Campania “Luigi Vanvitelli”, Naples, Italy and Department of Orthodontics, Islamic Azad University, Tehran, Iran
AIM: To review the literature about the effects of low level laser therapy (LLLT) on human periodontal ligament steam cells (hPDLSCs) and and human dental pulp stem cells (hDPSCs) MATERIALS AND METHOD: The electronic search was performed collecting articles in the PubMed/Medline, Scopus and Google Scholar databases from January 1990 to June 2016. Suitable papers were characterized as experimental studies that evaluated the effects of LLLT on hPDLSCs and hDPSCs. Reference lists of the selected articles were hand-searched for additional relevant publications that may have been missed previously. RESULTS: LLLT was able to significantly increase cell proliferation, collagen I and mRNA expression, and hPDLCs and hDPSCs osteogenic differentiation via cAMP regulation by stimulating oxidative phosphorylation and modulating inflammatory response. CONCLUSIONS: LLLT showed a positive influence on hPDLSCs and hDPSCs proliferation rate suggesting that laser phototherapy may improve stem cells growth in tissue engineering and regenerative medicine. However, further clinical studies should be performed to determine the appropriate dose of irradiation because in vitro study cannot always mimic real clinical conditions.
4-PREVALENCE OF TOOTH AGENESIS, SUPERNUMERARIES AND IMPACTION IN CHILDREN WITH VARIOUS TYPES OF CLEFTS
Massoud Shakib Pour, Abdolreza Jamilian, Mehri Jamilian, Alireza Darnahal, Shabnam Toopchi, Lyndhurst Dental Practice, Hastings, U.K., Department of Orthodontics, Dental Branch, Center of Craniofacial Research, Islamic Azad University, Tehran and 3Department of Gynecology, Arak University of Medical Sciences, Iran

AIM: To determine the prevalence of tooth agenesis, supernumeraries and impaction in different type of cleft patients. SUBJECTS AND METHOD: Two hundred and one cleft patients including 131 male subjects with a mean age of 12.3 ± 4 years and 70 female subjects with a mean age of 12.6 ± 3.9 years. Charts, models, radiographs, and intraoral photographs were used for the study. t-, chi-square and binomial tests were used for assessment of the data. RESULTS: Hypodontia was found in 129 subjects (64.1%). The chi-square test showed no statistically significant difference between the type of cleft and hypodontia (P = 0.319). The binomial test showed that the frequencies of subjects with hypodontia were significantly higher in both unilateral and bilateral cleft lip and palate patients (P < 0.015 and P < 0.001, respectively). Hyperdontia and impacted
teeth were also found to occur mostly in the maxillary arch, with the maxillary canines the most commonly impacted teeth in both unilateral and bilateral cleft lip and palate patients. CONCLUSIONS: In this study, no relationship was found between hypodontia and the type of cleft. No gender differences were found regarding the prevalence of hypodontia. This study also showed that both hyperdontia and impacted teeth occurred mostly in the maxillary arch, with the maxillary canines being the most frequently impacted teeth in all types of clefts
5-THE EFFECT OF THE TWIN BLOCK AND R-APPLIANCE IN THE TREATMENT OF MANDIBULAR DEFICIENCY
Massoud Shakib Pour, Abdolreza Jamilian, Rahman Showkatbakhsh, Shabnam Sheikholeslam Amiri, Lyndhurst Dental Practice, Hastings, U.K., Departments of Orthodontics, Dental Branch, Center of Craniofacial Research, Islamic Azad University, Tehran and 3Shahid Beheshti University, Tehran, Iran

AIM: To compare the effects of a differently designed functional appliance (the R-appliance) with a twin-block (TB) treated group. SUBJECTS AND METHOD: Thirty patients (18 girls, 12 boys) with a mean age of 10.5 ± 0.7 years were treated with the R-appliance for 16.2 ± 0.3 months and 25 (11 boys, 14 girls) with a mean age of 11.2 ± 1.3 years with a TB for 16.1 ± 1.4 months (control). All had a Class II division 1 malocclusion due to mandibular deficiency. Lateral cephalograms obtained at the beginning (T1) and end (T2) of the study were analysed. RESULTS: Paired t-tests showed that SNB significantly increased in both groups. The incisor mandibular plane angle (IMPA) was reduced in the R-appliance group by 1.9 ± 4.9 degrees (P < 0.04) but increased by 0.5 ± 5.1 degrees (P < 0.6) in the TB group. SNA in the R-appliance group showed an increase of 0.2 ± 1.8 degrees (P < 0.5), while it was decreased by 0.2 ± 1.3 degrees (P < 0.3) in the TB group. CONCLUSIONS: Both treatment modalities were successful in moving the mandible forward. However, with the R-appliance, this was achieved without retroclination of the lower incisors; the difference between the two groups was not statistically significant

6-THE EFFECTS OF A TONGUE PLATE VERSUS FACEMASK ON THE NASOMAXILLARY COMPLEX OF PATIENTS WITH A UNILATERAL CLEFT LIP AND PALATE
Rahman Showkatbakhsh, Sara Eslami, Abdolreza Jamilian, 1Shahid Beheshti University, Tehran, Department of Orthodontics, Tehran Dental Branch, 2Craniomaxillofacial Research Center, Tehran and 3Implant Research Center, Iran

AIM: Cleft lip and palate (CLP) patients suffer from maxillary deficiency. A facemask is a conventional appliance for treatment of maxillary deficiency in growing patients. Extraoral components and the bulky size of facemasks are the disadvantages of this appliance. A tongue plate appliance is a novel intraoral device for treatment of maxillary deficiency. To date, the effects of tongue plate therapy on patients with a CLP have not been evaluated. The aim of this study was to compare the effects of a tongue plate with a facemask on the nasomaxillary complex of growing patients with a CLP. SUBJECTS AND METHOD: Thirty growing patients with a non-syndromic unilateral CLP (17 girls, 13 boys) between the ages of 6-12 years volunteered to participate in this study. Patients were randomly assigned to two groups: 16 patients with a mean age of 8 ± 1.2 years were treated with a tongue plate for 19 ± 3 months, whereas 14 patients with a mean age of 8 ± 0.9 years old were treated with a facemask for 20 ± 4 months. All the patients had already undergone the preliminary stages of the lip and palate closure during infancy, but none of them had received bone grafts. Lateral cephalograms were obtained and analyzed at the start and end of treatment by means of paired t- and MannWhitney test. RESULTS: The paired t-test showed that in the tongue plate group, SNA and ANB were both increased by 1.8° ± 1.8° and 1.6° ± 1.6° respectively (P < 0.05). Similar findings were observed in the facemask group, SNA and ANB were increased by 1.9° ±1.5° and 1.8° ± 1.4° respectively (P < 0.05). The MannWhitney test showed no statistically significant differences between the two groups (P = 0.6). However, a counterclockwise rotation of the palatal plane was observed in the tongue plate group (0.5° ± 0.5°) which was also considered to be insignificant (P = 0.4). CONCLUSIONS: The tongue plate appliance shows comparable results with a facemask in improving the maxillary deficiency of growing patients with a CLP.