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https://www.readbyqxmd.com/read/28332131/biostimulation-with-diode-laser-positively-regulates-cementoblast-functions-in-vitro
#1
Serife Buket Bozkurt, Erdogan E Hakki, Seyit Ali Kayis, Niyazi Dundar, Sema S Hakki
The aim of this study was to evaluate the effects of diode laser biostimulation on cementoblasts (OCCM.30). A total of 40 root plates were obtained from healthy third molar teeth and assigned to the following two groups: (1) control group and (2) laser-treated group. Root plates were placed into the cell culture inserts, and OCCM.30 cells were seeded onto root plates. Cells were irradiated with a low level of diode laser (power: 0.3 W in continuous wave, 60 s/cm(2)). Proliferation and mineralized tissue-associated gene's and BMP's messenger RNA (mRNA) expressions of cementoblasts were evaluated...
March 22, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28330574/bi-maxillary-dentigerous-cyst-in-a-non-syndromic-child%C3%A2-%C3%A2-review-of-literature-with-a-case-presentation
#2
A Dhupar, S Yadav, V Dhupar, H C Mittal, S Malik, P Rana
Dentigerous cysts are the most common developmental odontogenic cysts of the jaw, which usually occur in the second and third decade of life. It is most frequently associated with impacted mandibular third molar teeth and impacted canines. Bilateral/multiple dentigerous cysts are rare and typically associated with developmental syndromes. Non-syndromic dentigerous cyst occurring bilaterally or involving both arches at the same time is very rare. Here, we discuss the review of literature with a case of unusual occurrence of non-syndromic bi-maxillary dentigerous cysts in a child...
February 2017: J Stomatol Oral Maxillofac Surg
https://www.readbyqxmd.com/read/28329740/human-chorionic-gonadotropin-regression-curves-after-partial-or-complete-molar-pregnancy-in-flanders-are-they-different-from-regression-curves-from-the-eighties
#3
Sien Delattre, Sileny Han, Philippe Moerman, Jaak Billen, Frédéric Goffin, Kathleen Scharpé, Ignace Vergote
BACKGROUND/AIMS: We updated human chorionic gonadotropin (hCG) regression curves created in the eighties after evacuation of complete and partial molar (CM and PM, respectively) pregnancies using modern hCG assays. We created similar curves for patients in need of chemotherapy (gestational trophoblastic neoplasia [GTN]). METHODS: A total of 126 patients who were diagnosed with gestational trophoblastic disease from 1990 to 2014 were included. We compared curves from 2 groups, CM and PM, with historical ones...
March 23, 2017: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/28327301/dentin-bond-optimization-using-the-dimethyl-sulfoxide-wet-bonding-strategy-a-2-year-in-vitro-study
#4
Thiago Henrique Scarabello Stape, Leo Tjäderhane, Arzu Tezvergil-Mutluay, Cristiane Rumi Fujiwara Yanikian, Anna Luiza Szesz, Alessandro Dourado Loguercio, Luís Roberto Marcondes Martins
OBJECTIVE: This study evaluated a new approach, named dimethyl sulfoxide (DMSO)-wet bonding, to produce more desirable long-term prospects for the ultrafine interactions between synthetic polymeric biomaterials and the inherently hydrated dentin substrate. METHODS: Sound third molars were randomly restored with/without DMSO pretreatment using a total-etch (Scocthbond Multipurpose: SBMP) and a self-etch (Clearfil SE Bond: CF) adhesive systems. Restored teeth (n=10)/group were sectioned into sticks and submitted to different analyses: micro-Raman determined the degree of conversion inside the hybrid layer (DC); resin-dentin microtensile bond strength and fracture pattern analysis at 24h, 1year and 2 years of aging; and nanoleakage evaluation at 24h and 2 years...
December 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28325960/efficacy-of-preoperative-administration-of-paracetamol-codeine-on-pain-following-impacted-mandibular-third-molar-surgery-a-randomized-split-mouth-placebo-controlled-double-blind-clinical-trial
#5
Maria Paola Cristalli, Gerardo La Monaca, Chiara De Angelis, Nicola Pranno, Susanna Annibali
Objectives. The aim of this study was to determine the effectiveness of preoperative administration of single-dose of paracetamol-codeine, in the relieving of acute postoperative pain after the surgical removal of an impacted mandibular third molar. Materials and Methods. The study cohort consisted of 32 Caucasian outpatients, giving a total of 64 bilateral symmetrical impacted mandibles. Patients were randomized in two experimental groups to receive a preoperative oral dose of paracetamol-codeine (analgesic group) or a placebo (placebo group) at the first and second surgeries...
2017: Pain Research & Management: the Journal of the Canadian Pain Society
https://www.readbyqxmd.com/read/28325532/effectiveness-of-binaural-beats-in-reducing-preoperative-dental-anxiety
#6
B K Isik, A Esen, B Büyükerkmen, A Kilinç, D Menziletoglu
Binaural beats are an auditory illusion perceived when two different pure-tone sine waves are presented one to each ear at a steady intensity and frequency. We evaluated their effectiveness in reducing preoperative anxiety in dentistry. Sixty patients (30 in each group) who were to have impacted third molars removed were studied (experimental group: 20 women and 10 men, mean (range) age 24 (18-35) years, and control group: 22 women and 8 men, mean (range) age 28 (15-47) years). All patients were fully informed about the operation preoperatively, and their anxiety recorded on a visual analogue scale (VAS)...
March 18, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28322953/recycling-of-poly-lactic-acid-silk-based-bionanocomposites-films-and-its-influence-on-thermal-stability-crystallization-kinetics-solution-and-melt-rheology
#7
Melakuu Tesfaye, Rahul Patwa, Arvind Gupta, Manash Jyoti Kashyap, Vimal Katiyar
In this study, the effect of silk nanocrystals (SNCs) on the thermal and rheological properties of poly (lactic acid) (PLA) under repetitive extrusion process is investigated. The presence of SNCs facilitates the crystallization process and delaying the thermal degradation of PLA matrix. This leads to the reduction in cold crystallization peak temperature with lower crystallization half-time and higher growth rate. The substantial improvement in nucleation density observed through Polarized Optical Microscope (POM) proves the nucleating effect of SNC in all processing cycles...
March 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28322361/effect-of-fluoride-treatments-on-bleached-enamel-microhardness-and-surface-morphology
#8
Dimitrios Dionysopoulos, Eugenia Koliniotou-Koumpia, Kosmas Tolidis, Paris Gerasimou
PURPOSE: To evaluate the effect of three different fluoride treatments on the surface microhardness and morphology of human enamel exposed to two different bleaching agents. MATERIALS AND METHODS: Twenty-three extracted human third molars were sectioned to obtain 90 enamel fragments, mounted on acrylic resin supports, polished and randomly divided into 9 groups (n = 10). The specimens were exposed to a combination of two bleaching agents (22% carbamide peroxide [CP] and 38% hydrogent peroxide [HP]) and three fluoride treatments (0...
March 20, 2017: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/28318872/dexamethasone-injection-into-the-pterygomandibular-space-in-lower-third-molar-surgery
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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