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https://www.readbyqxmd.com/read/28318872/dexamethasone-injection-into-the-pterygomandibular-space-in-lower-third-molar-surgery
#1
K Boonsiriseth, M M Latt, S Kiattavorncharoen, V Pairuchvej, N Wongsirichat
The objective of this study was to evaluate the effects of 8mg dexamethasone injection into the pterygomandibular space on the postoperative sequelae of lower third molar surgery. A prospective, randomized, controlled, split-mouth study was designed involving 62 lower third molar extractions (31 patients). Prior to surgery, the study group received 2ml of 4mg/ml (8mg) dexamethasone injection through the pterygomandibular space following local anaesthesia; the control group received 2ml normal saline injection...
March 16, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28316916/human-ex-vivo-dentin-pulp-complex-preservation-in-a-full-crown-model
#2
João Botelho, Maria Alzira Cavacas, Gonçalo Borrecho, Mário Polido, Pedro Oliveira, José Martins Dos Santos
OBJECTIVES: Currently, there is lack of human in vitro full tooth models that hold the odontoblast layer with pulp tissue in their native environment. The appearance of new in vitro and in vivo models has provided new understanding of the potential of tissue engineering in dental pulp regeneration. However, the development of new in vitro full tooth models will allow us to get closer to in vivo conditions. Thus, the aim of this study is to preserve a living dentin-pulp complex, in a novel in vitro full crown model, after tooth extraction...
January 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28315376/effect-of-a-novel-quaternary-ammonium-silane-cavity-disinfectant-on-durability-of-resin-dentine-bond
#3
D Umer, C K Y Yiu, M F Burrow, L-N Niu, F R Tay
OBJECTIVE: The present study examined the effect of a quaternary ammonium silane (QAS) cavity disinfectant on the viability of human dental pulp cells, dentine bond durability and nanoleakage of simplified etch-and-rinse adhesives. METHODS: Etched dentine surface of third molars were randomly divided into two adhesive groups, Adper™ Single Bond 2 and Prime & Bond(®) NT™. For each adhesive, the teeth were randomly assigned to five cavity disinfectant groups (N=6): Group 1: deionised water (control); Group 2: 2% chlorhexidine (CHX); Group 3: 2% QAS; Group 4: 5% QAS and Group 5: 10% QAS...
March 14, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28314941/neuropeptide-expression-and-morphometric-differences-in-crushed-alveolar-inferior-nerve-of-rats-effects-of-photobiomodulation
#4
Daniel Oliveira Martins, Fabio Martinez Dos Santos, Adriano Polican Ciena, Ii-Sei Watanabe, Luiz Roberto G de Britto, José Benedito Dias Lemos, Marucia Chacur
Inferior alveolar nerve (IAN) injuries may occur during various dental routine procedures, especially in the removal of impacted lower third molars, and nerve recovery in these cases is a great challenge in dentistry. Here, the IAN crush injury model was used to assess the efficacy of photobiomodulation (PBM) in the recovery of the IAN in rats following crushing injury (a partial lesion). Rats were divided into four experimental groups: without any procedure, IAN crush injury, and IAN crush injury with PBM and sham group with PBM...
March 17, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28304128/the-thickness-of-the-adhesive-layer-increases-the-misdiagnosing-of-the-radiolucent-zones-and-restoration-replacement-indication
#5
Tatiana Tambara Fröhlich, Gabriel Ferreira Nicoloso, Tathiane Larissa Lenzi, Fabio Zovico Maxnuck Soares, Rachel De Oliveira Rocha
OBJECTIVE: To evaluate the influence of the thickness of the adhesive layer and demineralized dentin on the decision to replace composite restoration. MATERIALS AND METHODS: Eighty human third molars with occlusal preparations (Class I) were randomly assigned to eight groups (n = 10): adhesive system (Clearfil SE Bond [CSE] or Scotchbond Universal Adhesive [SBU]); the number of adhesive layers (one or two); and substrate (sound or demineralized dentin). A blinded examiner evaluated radiographs of each restored tooth...
March 17, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28303237/the-effect-of-biomechanical-stimulation-on-osteoblast-differentiation-of-human-jaw-periosteum-derived-stem-cells
#6
Ju-Min Lee, Min-Gu Kim, June-Ho Byun, Gyoo-Cheon Kim, Jung-Hoon Ro, Dae-Seok Hwang, Byul-Bora Choi, Geun-Chul Park, Uk-Kyu Kim
BACKGROUND: This study was to investigate the effect of biomechanical stimulation on osteoblast differentiation of human periosteal-derived stem cell using the newly developed bioreactor. METHODS: Human periosteal-derived stem cells were harvested from the mandible during the extraction of an impacted third molar. Using the new bioreactor, 4% cyclic equibiaxial tension force (0.5 Hz) was applied for 2 and 8 h on the stem cells and cultured for 3, 7, and 14 days on the osteogenic medium...
December 2017: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28301686/non-operative-control-of-cavitated-approximal-caries-lesions-in-primary-molars-a-prospective-evaluation-of-cases
#7
Niels V Hansen, Bente Nyvad
The effect of non-operative caries control at cavity level is often questioned. This prospective study of cases aims to evaluate the suitability of non-operative treatment of active cavitated approximal caries lesions in primary molars by assessing clinical changes of lesions over time. Further, we evaluate childrens and parents attitudes in response to non-operative cavity treatment. Thirty-nine children attending a community dental service, aged 5-11 years, joined the evaluation based on the following criteria: i) presence of at least one active cavitated caries lesion in the distal surface of first primary molar or mesial surface of the second primary molar extending up to two thirds into dentin assessed radiographically, ii) absence of spontaneous pain, iii) absence of pulpal or periapical pathology...
March 16, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28301013/influence-of-different-dentin-substrate-caries-affected-caries-infected-sound-on-long-term-%C3%AE-tbs
#8
Ana Rosa Costa, Franklin Garcia-Godoy, Lourenço Correr-Sobrinho, Lucas Zago Naves, Luís Henrique Araújo Raposo, Fabíola Galbiatti de Carvalho, Mário Alexandre Coelho Sinhoreti, Regina Maria Puppin-Rontani
The aim of this study was to evaluate the μTBS in different dentin substrates and water-storage periods. Twenty-four dentin blocks obtained from sound third molars were randomly divided into 3 groups: Sound dentin (Sd), Caries-affected dentin (Ca) and Caries-infected dentin (Ci). Dentin blocks from Ca and Ci groups were subjected to artificial caries development (S. mutans biofilm). The softest carious tissue was removed using spherical drills under visual inspection with Caries Detector solution (Ca group)...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28299268/role-of-addition-of-dexamethasone-to-lignocaine-2-with-adrenaline-in-dental-nerve-blocks-for-third-molar-surgery-a-prospective-randomized-control-trial
#9
Saroj Prasad Deo
CONTEXT: Dexamethasone has been frequently used in oral surgical procedure and accepted by oral and maxillofacial surgeon community worldwide. However, this is the first clinical trial that used dexamethasone as adjuvant with lignocaine in dental nerve block (DNB). AIMS: The purpose of this double-blind, randomized control trial (RCT) was to compare the effect of dexamethasone with normal saline (NS) in a lignocaine DNB. SETTINGS AND DESIGN: This prospective, double-blind, RCT was carried out after obtaining approval from the Institutional Ethical Committee...
July 2016: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28299267/postsurgical-consequences-in-lower-third-molar-surgical-extraction-using-micromotor-and-piezosurgery
#10
Freddy Kersi Mistry, Nidarsh Diwakar Hegde, Mithra Nidarsh Hegde
BACKGROUND: One of the most critical and crucial steps in surgical extraction is cutting the bone or osteotomy, for which many techniques are used, e.g., chisels and mallet, rotary instruments, and ultrasound bone-cutting instruments. If they are not used judiciously, they can be hazardous. OBJECTIVES: To assess the efficiency of piezosurgery unit over micromotor while performing surgical extraction of lower third molars by assessing the time taken for the surgery and measuring postoperative parameters such as pain, trismus, and swelling...
July 2016: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28299228/surgical-management-of-unusual-biangular-mandibular-fractures
#11
Stefan Cocis, Umberto Autorino, Fabio Roccia, Chiara Corio
Bilateral mandibular angle fractures, while representing a rarity among mandibular fractures, are a huge challenge of complex management for the maxillofacial surgeon. There are still many open questions regarding the ideal management of such fractures, including the following: the removal of the third molar in the fracture line, the best surgical approach, and the fixation methods. In this report the authors present the case of 40-year-old man presenting with a bilateral mandibular angle fracture referred to the Maxillofacial Surgery Department of Turin...
2017: Case Reports in Surgery
https://www.readbyqxmd.com/read/28298990/an-ex-vivo-shear-and-tensile-bond-strengths-of-orthodontic-molar-tubes-bonded-using-different-techniques
#12
Elham Abu-Alhaija, Mohammad Jaradat, Ahed Alwahadni
BACKGROUND: Molar bonding procedures need continuous improvement to be widely accepted clinically and eventually replace molar bands. MATERIAL AND METHODS: The purpose of this study was to determine the effects of enamel micro-abrasion and silane coating of the base of molar tubes on shear and tensile bond strengths of orthodontic molar tubes. A total of 200 third molars were randomly allocated into five groups of 40 teeth as follows: group 1: molar tubes bonded to etched teeth (37% phosphoric acid gel; control group); group 2: molar tubes bonded to etched teeth (37% phosphoric acid) with the addition of silane to the base of molar tubes; group 3: molar tubes bonded to teeth pre-treated with 18% hydrochloric acid and pumice (micro-abrasion); group 4: molar tubes bonded to teeth pre-treated with microabrasion with the addition of silane to the base of molar tubes; group 5: molar tubes bonded to teeth pre-treated with microabrasion before conventional acid etching combined with the addition of silane to the base of molar tubes...
March 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28298976/wear-of-the-primary-waveone-single-file-when-shaping-vestibular-root-canals-of-first-maxillary-molar
#13
Daniel Aracena, Eduardo Borie, Pablo Betancourt, Angella Aracena, Mario Guzmán
BACKGROUND: It is very important for a clinician to know the increased wear of mechanized files when establishing endodontic therapy. The aim of this study was to check the wear of the Primary WaveOne file upon shaping two, four and six maxillary molar vestibular canals. MATERIAL AND METHODS: The deterioration of 40 files, divided into four groups, was evaluated microscopically: group 1, control (unused); group 2, two canals; group 3, four canals; and group 4, six canals...
March 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28298970/effect-of-orthodontic-treatment-involving-first-premolar-extractions-on-mandibular-third-molar-angulation-and-retromolar-space
#14
Luz-Victoria Mendoza-García, Esther Vaillard-Jiménez, Araceli García-Rocha, Carlos Bellot-Arcís, Vanessa Paredes-Gallardo
BACKGROUND: Third molars present more problems than other teeth because they are the last teeth to erupt, and so it is important to assess their development when designing an orthodontic treatment plan. The aim of this study was to compare the angulation of the mandibular third molar and retromolar space before and after orthodontic treatment in cases involving first premolar extraction. MATERIAL AND METHODS: 76 patients, 59 women (77.63%) and 17 men (22.36%), were recruited from the Orthodontics Clinic at Benemérita Universidad Autónoma de Puebla (Mexico)...
March 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28294694/the-effects-of-transcutaneous-and-intraoral-low-level-laser-therapy-after-extraction-of-lower-third-molars-a-randomized-single-blind-placebo-controlled-dual-center-study
#15
Sevil Altundag Kahraman, Sedat Cetiner, Robert A Strauss
OBJECTIVE AND BACKGROUND: The surgical removal of impacted third molars is one of the most common procedures performed by oral and maxillofacial surgeons. The purpose of this study is to determine whether either transcutaneous or intraoral low-level laser therapy (LLLT) reduces postoperative pain and assists in the healing of mandibular third molar extraction. MATERIALS AND METHODS: This randomized, placebo controlled, single-blind, split-mouth design study was conducted on 60 patients with full bony impacted similar position mandibular third molars bilaterally...
March 14, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28294198/external-and-internal-resin-infiltration-of-natural-proximal-subsurface-caries-lesions-a-valuable-enhancement-of-the-internal-tunnel-restoration
#16
Andrej M Kielbassa, Ina Ulrich, Vanessa D Werth, Christoph Schüller, Wilhelm Frank, Rita Schmidl
OBJECTIVE: The aim of this ex-vivo study was to evaluate both the external and the internal penetration ability of a resin infiltrant into natural proximal and macroscopically intact white spot lesions, and to merge this approach with the internal tunnel preparation concept. METHOD AND MATERIALS: 20 premolars and 20 molars with proximal subsurface lesions (ICDAS, code 2) and respective radiographic lesion depths extending into the middle third of dentin (D2 lesions) were selected and divided into two groups...
March 14, 2017: Quintessence International
https://www.readbyqxmd.com/read/28292602/investigation-of-human-dental-pulp-cells-on-a-potential-injectable-poly-lactic-co-glycolic-acid-microsphere-scaffold
#17
Huiru Zou, Guanhua Wang, Fang Song, Xudong Shi
INTRODUCTION: Poly(lactic-co-glycolic acid) (PLGA) has been extensively explored in the tissue engineering field with good biocompatibility and biodegradability. PLGA microspheres' injectable potency makes it highly desirable in dentin-pulp complex regeneration. Therefore, we investigated the cell adhesion, proliferation, odontogenic differentiation, and matrix mineralization of human dental pulp cells (HDPCs) on a PLGA microsphere scaffold. We hypothesized that this scaffold might be suitable for dentin-pulp complex regeneration...
March 11, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28291569/influence-of-third-molars-in-mandibular-fractures-part-1-mandibular-angle-a-meta-analysis
#18
REVIEW
A C V Armond, C C Martins, J C R Glória, E L Galvão, C R R Dos Santos, S G M Falci
The aim of this systematic review was to investigate the influence of the presence and position of mandibular third molars on angle fractures. An electronic search was conducted in the PubMed, Scopus, Web of Science, Cochrane Library, and VHL databases, through January 2016. The eligibility criteria included observational studies. The search strategy resulted in 704 articles. Following the selection process, 35 studies were included in the systematic review and 28 in the meta-analysis. Twenty studies presented a score of ≤6 stars in the Newcastle-Ottawa scale assessment, indicating a risk of bias in the analysis...
March 10, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28290304/ectopic-eruption-of-a-lower-permanent-molar-from-the-mediaeval-necropolis-of-alc%C3%A3-%C3%A3-ova-do-castelo-m%C3%A3-rtola-portugal
#19
Inês Leandro, Clara Rodrigues, Susana Gómez-Martínez, Cláudia Umbelino
The mediaeval necropolis of Alcáçova do Castelo is located in Mértola, Southern Portugal, and dates from the 14th to the 16th centuries. The archaeological campaigns started in 1978 and continue today, having yielded more than 759 graves. This report discusses an ectopic tooth eruption observed in skeleton 535, an adult female individual. A distal right permanent lower molar presents an ectopic eruption at the posterior margin of the coronoid process. On the opposite side, the first and second permanent molars are present, the left permanent lower third molar is absent and the mandibular ramus cannot be evaluated since it is broken off and lost...
March 2017: International Journal of Paleopathology
https://www.readbyqxmd.com/read/28287912/osteogenic-differentiation-of-mesenchymal-stromal-cells-a-comparative-analysis-between-human-subcutaneous-adipose-tissue-and-dental-pulp
#20
Iolanda D'Alimonte, Filiberto Mastrangelo, Patricia Giuliani, Laura Pierdomenico, Marco Marchisio, Mariachiara Zuccarini, Patrizia Di Iorio, Raimondo Quaresima, Francesco Caciagli, Renata Ciccarelli
White adipose tissue is a source of mesenchymal stromal/stem cells (MSCs) that are actively studied for their possible therapeutic use in bone tissue repair/remodeling. To better appreciate the osteogenic potential of these cells, we compared some properties of MSCs from human subcutaneous adipose tissue [subcutaneous-adipose stromal cells (S-ASCs)] and dental pulp stem cell (DPSCs) of third-impacted molars, the latter representing a well-established MSC source. Both undifferentiated cell types showed similar fibroblast-like morphology and mesenchymal marker expression...
March 13, 2017: Stem Cells and Development
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