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https://www.readbyqxmd.com/read/28446043/crown-heights-in-the-permanent-teeth-of-47-xyy-males
#1
Raija Pentinpuro, Paula Pesonen, Lassi Alvesalo, Raija Lähdesmäki
OBJECTIVE: The results in human sex chromosome aneuploidies had shown that the extra Y chromosome increases permanent and deciduous tooth crown sizes in the mesiodistal and labiolingual directions. The hypothesis of the study was that the additional Y chromosome increases the permanent tooth crown growth in a vertical dimension. We also aimed to observe possible sex difference in the permanent tooth crown height. MATERIAL AND METHODS: Data on 15 47,XYY males or males with an extra Y chromosome, nine male relatives (five brothers and four fathers) and 45 male and 48 female population controls had been gathered previously for Professor Lassi Alvesalo's KVANTTI Research Project...
April 26, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28444013/third-molars-and-premolars-extraction-in-conventional-orthodontics-and-in-treatments-based-on-maxillary-bone-remodeling-with-temporary-anchorage-indications-and-care
#2
Alberto Consolaro
A bone is an anatomic structure in constant remodeling, with different, mutant and wonderfully inconstant designs. With every new and immediate functional demand, there are changes in cortical thickness, trabecular bone density and also in direction and size of trabeculae. Bones' non-stopping search is for adjusting to the functions induced by forces and movements required by a certain life style. Conventional orthodontic planning or with temporary anchorage based on bone remodeling takes into consideration the spaces that are - or may be - occupied by the teeth, in the formation of a functional and esthetic dental arch for the patient...
February 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28439581/lower-educational-level-is-a-risk-factor-for-tooth-loss-analysis-of-a-swiss-population-krebs-project
#3
Fabiola-Regina Rodriguez, Nadine Paganoni, Roland Weiger, Clemens Walter
PURPOSE: To analyse risk factors for tooth loss in women and men seeking treatment at the University of Basel, Switzerland. MATERIALS AND METHODS: Records of patients from the pool of patients at the department were consecutively screened between January 2009 and October 2011. Gender, smoking habits, education, profession, general health status and dental variables were recorded. Tooth loss was assessed on full-mouth periapical radiographs. Gender-nested logistic regression models were applied for statistical analysis...
2017: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/28439171/lingual-based-four-cornered-flap-for-third-molar-surgery
#4
Anshul Rai, Monika Rai
PURPOSE: The aim of this prospective randomized clinical study was to compare the efficacy of lingual based four cornered flap with the commonly used triangular flap for impacted third molar surgery. METHODS: Ten patients with bilateral impacted third molars were randomly treated under local anaesthesia, one side with triangular flap and single layer closure (with 3-0 silk) and other side by raising lingual based four cornered flap and double layer closure, subcutaneously with 5-0 vicryl and mucosa with 3-0 silk...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28439159/a-randomized-controlled-study-comparing-efficacy-of-classical-and-gow-gates-technique-for-providing-anesthesia-during-surgical-removal-of-impacted-mandibular-third-molar-a-split-mouth-design
#5
Nanjappa Madan, Kateel Shashidhara Kamath, A L Gopinath, A Yashvanth, Nagaraj Vaibhav, G Praveen
INTRODUCTION: Reliable profound mandibular block anesthesia is questionable when depositing the anesthetic solution at the lingula. The Gow-Gates technique is an useful alternative to the classical inferior alveolar nerve block and the incidence of unsuccessful anesthesia may be as high as classical technique. The aim of this study is to compare the clinical efficacy, degree of patient acceptability, advantages, disadvantages and limitations of the classical and Gow-Gates techniques for providing anesthesia in patients undergoing bilateral symmetrical surgical removal of impacted mandibular third molar under local anesthesia...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28438596/can-preoperative-intramuscular-single-dose-dexamethasone-improve-patient-centered-outcomes-following-third-molar-surgery
#6
Mahmoud Al-Dajani
PURPOSE: Because of increased attention focused on administering dexamethasone to treat third molar surgical complications, this study investigated the efficacy of single-dose dexamethasone in managing postoperative complications after impacted third molar surgery. Pain intensity and analgesic intake, patients' discomfort, limitation of oral function, and limitation of daily activities were assessed. MATERIALS AND METHODS: This triple-blinded split-mouth randomized controlled clinical trial included patients 18 to 30 years old who underwent randomized bilateral extractions of impacted mandibular third molars during 2 consecutive sessions...
March 31, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28438595/does-administration-of-oral-versus-intravenous-antibiotics-for-third-molar-removal-have-an-effect-on-the-incidence-of-alveolar-osteitis-or-postoperative-surgical-site-infections
#7
Matthew D Reiland, Kyle S Ettinger, Christine M Lohse, Christopher F Viozzi
PURPOSE: To compare the incidence of postoperative alveolar osteitis (AO) and surgical site infections (SSIs) in 2 separate cohorts of patients undergoing elective third molar removal: those who received postoperative oral (PO) antibiotics and those who received perioperative intravenous (IV) antibiotics. MATERIALS AND METHODS: A retrospective cohort study of all patients 14 to 30 years old undergoing elective outpatient third molar removal under a single surgeon's service over a 12-year period was completed...
March 31, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28438151/effect-of-platelet-rich-fibrin-on-edema-and-pain-following-third-molar-surgery-a-split-mouth-control-study
#8
Uğur Gülşen, Mehmet Fatih Şentürk
BACKGROUND: To evaluate the efficacy of platelet-rich fibrine (PRF) on postoperative edema and pain after impacted mandibular third molar surgery. METHODS: The prospective study was comprised 30 patients who presented for the removal of bilateral impacted mandibular third molar teeth. After extraction, the sockets were filled with PRF or without PRF in the study and control groups, respectively. Postoperative edema was measured with a flexible tape measure by calculating the distance between several facial landmarks on postoperative days two and seven...
April 24, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28437508/comparative-evaluation-of-anesthetic-efficacy-of-2-lidocaine-4-articaine-and-0-5-bupivacaine-on-inferior-alveolar-nerve-block-in-patients-with-symptomatic-irreversible-pulpitis-a-prospective-randomized-double-blind-clinical-trial
#9
Vivek Aggarwal, Mamta Singla, Sanjay Miglani
AIMS: To compare the anesthetic efficacy of 1.8 mL of 2% lidocaine with 1:200,000 epinephrine, 4% articaine with 1:100,000 epinephrine, and 0.5% bupivacaine with 1:200,000 epinephrine on producing inferior alveolar nerve block (IANB) in patients with symptomatic irreversible pulpitis. METHODS: A total of 91 adult patients who were actively experiencing mandibular molar pain were involved in this study. The patients were randomly divided into three groups on the basis of the anesthetic solution used...
April 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/28434170/establishment-and-characterization-of-novel-epithelial-like-cell-lines-derived-from-human-periodontal-ligament-tissue-in-vitro
#10
Kallapat Tansriratanawong, Hiroshi Ishikawa, Junko Toyomura, Soh Sato
In this study, novel human-derived epithelial-like cells (hEPLCs) lines were established from periodontal ligament (PDL) tissues, which were composed of a variety of cell types and exhibited complex cellular activities. To elucidate the putative features distinguishing these from epithelial rest of Malassez (ERM), we characterized hEPLCs based on cell lineage markers and tight junction protein expression. The aim of this study was, therefore, to establish and characterize hEPLCs lines from PDL tissues. The hEPLCs were isolated from PDL of third molar teeth...
April 22, 2017: Human Cell
https://www.readbyqxmd.com/read/28433071/association-between-the-eruption-of-the-third-molar-and-caries-and-periodontitis-distal-to-the-second-molars-in-elderly-patients
#11
Yu-Hsiang Chou, Pei-Shan Ho, Kun-Yen Ho, Wen-Chen Wang, Kai-Fang Hu
The objective of this study was to verify whether caries and periodontal diseases, when present on the distal surface of the second molars (M2s), are associated with the eruption of the third molars (M3s). In this split-mouth study, we evaluated 70 elderly patients with unilateral maxillary or mandibular M3s who presented to the outpatient clinics of two hospitals. Patients underwent comprehensive oral examinations and radiographical measurements, and we assessed the outcomes of periodontal disease and caries...
May 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/28427322/dental-pulp-pluripotent-like-stem-cells-dppsc-a-new-stem-cell-population-with-chromosomal-stability-and-osteogenic-capacity-for-biomaterials-evaluation
#12
Raquel Núñez-Toldrà, Ester Martínez-Sarrà, Carlos Gil-Recio, Miguel Ángel Carrasco, Ashraf Al Madhoun, Sheyla Montori, Maher Atari
BACKGROUND: Biomaterials are widely used to regenerate or substitute bone tissue. In order to evaluate their potential use for clinical applications, these need to be tested and evaluated in vitro with cell culture models. Frequently, immortalized osteoblastic cell lines are used in these studies. However, their uncontrolled proliferation rate, phenotypic changes or aberrations in mitotic processes limits their use in long-term investigations. Recently, we described a new pluripotent-like subpopulation of dental pulp stem cells derived from the third molars (DPPSC) that shows genetic stability and shares some pluripotent characteristics with embryonic stem cells...
April 21, 2017: BMC Cell Biology
https://www.readbyqxmd.com/read/28422596/agenesis-of-third-molars-among-turkish-children-between-the-ages-of-12-and-18-years-a-retrospective-radiographic-study
#13
Gulser Kilinç, Ozlem Kıpcak Akkemik, Umit Candan, Mehmet Sinan Evcil, Hulya Ellidokuz
PURPOSE: The aim of this study was to investigate the agenesis of third molars (M3) in children with permanent dentition in a limited population in the province of Izmir, Turkey. STUDY DESIGN: The panoramic radiographs of 773 patients (457 females, 316 males) were evaluated retrospectively at the Dental Hospital of Ministry of Health in İzmir, Turkey. The patients' ages ranged from 12-18 years. The agenesis of M3 teeth was investigated according to maxilla and mandible and right and left distribution...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28419843/a-review-of-in-office-dynamic-image-navigation-for-extraction-of-complex-mandibular-third-molars
#14
Robert W Emery, Oxana Korj, Ravi Agarwal
PURPOSE: We performed a retrospective review of in-office removal of complex mandibular third molars with a dynamic image navigation system (DINS). MATERIALS AND METHODS: A retrospective review was conducted of cases completed from 2010 to 2014 by a single oral and maxillofacial surgeon. The average age of the patients was 47 years (range, 27 to 72 years). Extraction complexity was classified with Juodzbalys and Daugela's classification system. The included study cases had complexity scores of 9 or greater...
March 25, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28416847/-effects-of-bioactive-glass-and-extracted-dentin-proteins-on-human-dental-pulp-cells
#15
Y Xin, S N Wang, C Y Cui, Y M Dong
OBJECTIVE: To investigate the proliferation, odontogenic differentiation and mineralization of human dental pulp cells (HDPCs) on bioactive glass(BG) and extracted dentin proteins(EDP). METHODS: Primary HDPCs were isolated from third molars by enzyme digestion and were cultured in Dulbecco's minimum essential medium (DMEM). Then the 4th generation of HDPCs was cultured with DMEM, which contained BG-EDP, BG, and EDP, respectively. Meanwhile HDPCs were cultured in DMEM as control group...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28416846/-influence-of-the-arg-gly-asp-ser-sequence-on-the-biological-effects-of-bioactive-glass-on-human-dental-pulp-cells
#16
Y Liu, S N Wang, C Y Cui, Y M Dong
OBJECTIVE: Positive effects of bioactive glass (BG) on proliferation, mineralization, and differentiation of human dental pulp cells (hDPCs) was already verified in various former studies. The Arg-Gly-Asp-Ser sequence (RGDS) was confirmed of affecting cell adhesion. Before further investigation, the objective of this study is to investigate whether RGDS can affect the effects of BG on the adhesion, proliferation and mineralization of hDPCs. METHODS: hDPCs were harvested from third molars of 18-25-year-old individuals after informed consent...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28414988/response-of-mandibular-condyles-of-juvenile-and-adult-rats-to-abnormal-occlusion-and-subsequent-exemption
#17
Guang Zeng, Bin Kuang, Wen-Xing Xun, Gao-Tong Ren, Ke-Wen Wei
OBJECTIVE: The adaptation capacities of the mandibular condyle in response to mechanical stimuli might be different between juveniles and adults, but has not been compared. This study aimed to investigate whether abnormal molar occlusion and subsequent molar extraction could lead to different remodeling responses in the mandibular condyles of juvenile and adult rats. METHODS: Abnormal molar occlusion (AMO) was established in the 5- and 16-wk old rats by moving their maxillary left and mandibular right third molars distally...
March 28, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28414987/effects-of-different-radiation-doses-on-the-microhardness-superficial-morphology-and-mineral-components-of-human-enamel
#18
Sandra Ribeiro de Barros da Cunha, Felipe Paiva Fonseca, Pedro Augusto Minorin Mendes Ramos, Cecília Maria Kalil Haddad, Eduardo Rodrigues Fregnani, Ana Cecília Corrêa Aranha
OBJECTIVE: To evaluate the effects of three different radiotherapy doses (20, 40, and 70Gy) on the microhardness, superficial morphology, and mineral content (based on Ca and P values) of three different depths of human enamel (cervical, middle, and occlusal). DESIGN: Thirty-four third molars were cut, separated, and prepared. Microhardness samples (n=30) were embedded in acrylic resin and then polished, and depths were delimited. Microhardness tests were performed on cervical, middle, and occlusal enamel pre- and post-radiotherapy with a load of 50g for 30s...
April 10, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28412268/how-is-third-molar-status-associated-with-the-occurrence-of-mandibular-angle-and-condyle-fractures
#19
Shuai Xu, Jun-Jie Huang, Yu Xiong, Ying-Hui Tan
PURPOSE: Third molars (M3s) have been hypothesized to be associated with the risk of mandibular angle fracture and mandibular condylar fracture. The authors systematically estimated the relative risk (RR) of M3 status for the development of mandibular angle fracture and mandibular condylar fracture through a meta-analysis of cohort studies. MATERIALS AND METHODS: In this systematic review, the PubMed, EMBASE, and Cochrane Library databases were searched from inception to October 2016...
March 23, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28411886/interference-factors-regarding-the-path-of-insertion-of-rotational-path-removable-partial-dentures
#20
Chan-Te Huang, Fang-Chun Liu, Kwing-Chi Luk
BACKGROUND: The aims of this study were to evaluate the effect of the location of the rotational center and the morphology of teeth resulting in interference with the rotational path of insertion and to estimate when an interference test should be performed. METHODS: A total of 400 dental radiograms of maxillary and mandibular first and second molars (100 for each position) were selected. The radiograms were used to hand-sketch the outlines on tracing paper. Then, an interference test was simulated using calipers...
February 2017: Biomedical Journal
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