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In vitro osteogenic potential of an experimental calcium silicate-based root canal sealer.

OBJECTIVE: This in vitro study compared the cytotoxicity and osteogenic potential of an experimental calcium silicate-based sealer with an epoxy resin-based sealer (AH Plus; Dentsply Caulk, Milford, DE) and a zinc oxide-eugenol-based sealer (Pulp Canal Sealer; SybronEndo, Orange, CA). METHODS: Disks prepared from the respective sealer and from Teflon (negative control) were placed in direct contact with a MC3T3-E1 osteogenic cell line at 6 weekly intervals after immersion in a culture medium. Succinic dehydrogenase activities were evaluated using 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyl tet

Cell markers, cytokines, and immune parameters in cement mason apprentices.

OBJECTIVE: Cement masons are known to have significant silica exposure, and silica exposure and silicosis are thought to increase risk of autoimmune disease. Because the mechanisms remain obscure, with inconclusive reports of systemic immune effects following silica exposure, our goal was to identify potential early markers of silica-related immunologic and respiratory effects. METHODS: We conducted a cross-sectional study of cement mason apprentices and electrician (control) apprentices. Demographics, dust exposure history, symptoms, spirometry, exhaled nitric oxide, and blood (for immunoglo

Bisphosphonate-loaded bone cement: Background, clinical indications and future perspectives.

Bisphosphonates represent an established treatment against bone resorption and osseous loss. Local application could help increase bone mineral density while minimizing their systemic use side-effects. Bone cement, used on a large scale in orthopedic surgery and a historically successful drug carrier, could represent an effective scaffold. The aim of this review was to investigate the alterations produced on the cement's structure and properties by this mixture, as well as its antiosteoporotic and antitumor effect. After a thorough research of articles, title screening and duplicate removal we

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… Gong et al. initially used calcium silicate cement as a carrier, trying to take advantage of its superior mechanical strength over PMMA or CPC[ 34 ]. … In an attempt to optimize the carrier’s biomechanical properties, Gong et al tried calcium phosphate silicate cement (CPSC) as a carrier where they incorporated RA. …

A Randomized Trial Using 3Mixtatin Compared to MTA in Primary Molars with Inflammatory Root Resorption: A Novel Endodontic Biomaterial.

OBJECTIVES: Novel methods for preserving primary teeth can help to maintain their developmental, esthetic, and functional capabilities. The aim of this study was to assess the success of the repair of bony defects, caused by pre-treatment perforations, with a mixture of three antibiotics combined with simvastatin (3Mixtatin) compared to MTA in hopeless primary molars. STUDY DESIGN: In this randomized clinical trial, 80 teeth from 65 healthy children aged 3-6 years with interradicular or periapical root resorption and/or perforation in primary molars were treated either with 3Mixtatin or MTA b

Histologic study of a human immature permanent premolar with chronic apical abscess after revascularization/revitalization.

INTRODUCTION: Histologic studies of teeth from animal models of revascularization/revitalization are available; however, specimens from human studies are lacking. The nature of tissues formed in the canal of human revascularized/revitalized teeth was not well established. METHODS: An immature mandibular premolar with infected necrotic pulp and a chronic apical abscess was treated with revascularization/revitalization procedures. At both the 18-month and 2-year follow-up visits, radiographic examination showed complete resolution of the periapical lesion, narrowing of the root apex without roo

Pulp capping with mineral trioxide aggregate (MTA): a retrospective analysis of carious pulp exposures treated by undergraduate dental students.

The current study estimated pulpal vitality after MTA pulp caps were performed by undergraduate student clinicians. At recall after 12 to 27 months, 51 pulp caps were clinically and radiographically assessed. Kaplan-Meier analyses were used to estimate overall success at 12 and 24 months, determined as the presence of a vital pulp, as well as impact of preoperative variables on pulp vitality at recall. Overall, one-year pulp survival was 67.7%, while the two-year survival rate was 56.2%. Tarone-Ware statistics indicated that neither age of the patient nor size of the exposure ("minimal" or "mo

Cytokine expression in response to root repair agents.

AIM: To evaluate the expression of TNF-α, IL-6, IFN-γ, TGF-β, IL-4, IL-10, RANKL, RANK and OPG on mouse calvarial bone treated with MTA, Geristore® and Emdogain® . METHODOLOGY: Bone wounds were made on the heads of C57BL/6 mice, breaking the periosteum and the cortical surface of the calvaria. Each repair agent was inserted into sectioned Eppendorf microtubes and placed on the bone wound, and soft tissues were sutured. At 14 and 21 days, animals were sacrificed and the treated region was dissected. The calvaria bone was removed, and RNA was extracted. mRNA expression of the aforementioned cyt

Shear bond strength of orthodontic brackets bonded to porcelain following etching with Er:YAG laser versus hydrofluoric acid.

AIM: The purpose of the present study was to evaluate the shear bond strength of orthodontic brackets bonded to porcelain following etching with erbium-doped yttrium aluminum garnet (Er:YAG) laser compared with 9.6% hydrofluoric acid (HF). METHODS: A total of 100 porcelain disk samples were divided into four groups, and after removing their glazed layer, the first group was etched with 9.6% HF, and the other three groups were etched with Er:YAG lasers of 1.6, 2, and 3.2 W, respectively. After application of silane on the disk surfaces, central incisor brackets were bonded with composite on th

Гидрационный механизм и микроструктурная эволюция низкокалорийного цемента на основе морской воды.

В этой статье предлагается новый метод подготовки к производству цемента с низким содержанием щелочи на основе морской воды, активированного с помощью фосфогипсума (PG), в целях повышения эффективности систем многоотходных связующих устройств с использованием высокоионной среды морской воды при одновременном решении вопросов затрат и щелочности, связанных с традиционными активаторами с высоким содержанием щелочи. Последствия частичной замены наземной гранулированной ударной шлаки (GGBS) на PG (GG)0-15%) и летающая зола (FA, 20-50%) в отношении времени установки были изучены револогические свой

Cellular differentiation, bioactive and mechanical properties of experimental light-curing pulp protection materials.

OBJECTIVE: Materials for pulp protection should have therapeutic properties in order to stimulate remineralization and pulp reparative processes. The aim of this study was to evaluate the mechanical properties, biocompatibility, cell differentiation and bioactivity of experimental light-curable resin-based materials containing bioactive micro-fillers. METHODS: Four calcium-phosphosilicate micro-fillers were prepared and incorporated into a resin blend: 1) Bioglass 45S5 (BAG); 2) zinc-doped bioglass (BAG-Zn); 3) βTCP-modified calcium silicate (β-CS); 4) zinc-doped β-CS (β-CS-Zn). These experim

Histologic and histobacteriologic observations of failed revascularization/revitalization therapy: a case report.

INTRODUCTION: Mechanical debridement plays an important role in eliminating intracanal bacteria, such as biofilm on the canal walls and bacteria in the dentinal tubules. Mechanical debridement is not recommended for root canal disinfection in revascularization/revitalization therapy. Here we report a failed revascularization/revitalization case, which could be due to inadequate root canal disinfection without mechanical removal of biofilm and bacteria in dentinal tubules. METHODS: A 6-year-old boy had a traumatic injury to tooth #9, which was avulsed and replanted within 40 minutes. The tooth

Success rates of mineral trioxide aggregate, ferric sulfate, and formocresol pulpotomies: a 24-month study.

PURPOSE: The purpose of this study was to evaluate the total success rates of mineral trioxide aggregate (MTA), ferric sulfate (FS), and formocresol (FC) as pulpotomy agents in primary molars. METHODS: A randomized, split-mouth study design was used in 32 healthy 5- to 7-year-old children with 128 carious primary molars without clinical or radiographic evidence of pulp degeneration. The pulpotomy agents were assigned as follows: Group 1=MTA; Group 2=FS; Group 3=1:5 diluted Buckley's FC; and Group 4=zinc oxide eugenol (ZOE) base. Clinical and radiographic follow-up at 6, 12, and 24 months used

A randomized trial of direct pulp capping in primary molars using MTA compared to 3Mixtatin: a novel pulp capping biomaterial.

OBJECTIVE: This study aimed to examine the efficacy of 3Mixtatin (a combination of simvastatin and 3Mix antibiotic) as a novel pulp capping biomaterial in DPC of human primary molars. METHODS: In this randomized clinical trial, 160 primary molars from 83 healthy children aged 3-6 years were randomly allocated into four groups. Small traumatic non-caries pulpal exposures were treated by DPC using simvastatin, 3Mix, 3Mixtatin, or MTA. Capping materials were covered with hard-setting zinc oxide eugenol (ZOE) cement, and then, teeth were restored with amalgam. Clinical and radiographic examinatio

Periodontal ligament fibroblast response to root perforations restored with different materials: a laboratory study.

AIM: To compare the effect of several materials on the attachment of periodontal ligament (PDL) fibroblasts to experimentally perforated root surfaces. METHODOLOGY: Root specimens (size 5 × 5 mm) were obtained from extracted human molar teeth and perforations with a 1 mm diameter were created. One group was kept as a control and the rest were repaired with the following materials: Amalgam, Dyract, IRM, Super Bond C&B and Mineral trioxide aggregate (MTA). PDL fibroblasts were placed at a density of 8 × 10(4) cells on the root specimens, incubated on tissue culture inserts (48 h) and then trans

Последние достижения в области эндодонтического диагностирования и современных планов лечения

В целом, для достижения успеха в области эндодонтики необходимо проявлять осторожность и совершенство на всех этапах лечения [...]

Effects of simvastain and enamel matrix derivative on Portland cement with bismuth oxide-induced growth and odontoblastic differentiation in human dental pulp cells.

INTRODUCTION: We previously reported that bismuth oxide containing Portland cement (BPC) showed similar biocompatibility to Portland cement (PC) in periodontal ligament cells. However, the bioactivity of simvastatin and Emdogain (Biora AB, Malmö, Sweden) on BPC was not reported. The aim of this study was to evaluate the effects of simvastatin and Emdogain on BPC compared with mineral trioxide aggregate (MTA) in human dental pulp cells (HDPCs). METHODS: Cell growth was determined by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium-bromide (MTT) assay. Differentiation was evaluated by alkal

Effect of dental materials calcium hydroxide-containing cement, mineral trioxide aggregate, and enamel matrix derivative on proliferation and differentiation of human tooth germ stem cells.

INTRODUCTION: Biocompatibility of pulp capping materials is important for successful use in dentistry. These materials should be nontoxic and permissive for proliferation and induction of odontogenic differentiation of pulp cells. The aim of our study was to evaluate the effects of enamel matrix derivative (EMD), mineral trioxide aggregate (MTA), and calcium hydroxide-containing cement (DYCAL) on proliferation and odontogenic differentiation of human tooth germ stem cells (hTGSCs) in which cells belonging to both pulp tissue and dental follicle exist. METHODS: The 96-well plates, 24-well plat

Влияние инженерного распределения твердых частиц обычного портовых цемента на дополнительный цемент: сравнительный анализ эффективности с коммерческим портландским цементом.

В этом исследовании рассматривается критическая взаимосвязь между распределением частиц по размеру (PSD) и соединениями Бога, при этом подчеркивается их важнейшая роль в повышении прочности цемента на раннем этапе при одновременном обеспечении устойчивости. В ходе исследования изучаются экспериментальные процедуры, в результате чего коммерческий обычный портленд цемент (К-ОПК) подвергается измельчению, что приводит к специфическому изысканию. 5390 см2/г, именуемый "стимулятором (S)". Преобразование этого стимулятора в стандарт C-OPC при точно калиброванном 45% Соотношение веса (именуемое "S45"

LncRNA CASC15 serves as a diagnostic biomarker for postmenopausal osteoporotic fractures and its knockdown enhances HBMSC osteogenic differentiation via miR-152-3p.

OBJECTIVE: Long non-coding RNA CASC15 plays a role in the development of various human diseases. However, the diagnostic role and molecular mechanisms of CASC15 in postmenopausal osteoporosis (PMOP) remain unclear. METHODS: This study enrolled 137 healthy postmenopausal women and 141 PMOP patients. CASC15 and miR-152-3p levels in serum and HBMSCs were measured via RT-qPCR. Western blotting and RT-qPCR were employed to analyze the protein and mRNA expression levels of osteogenic markers (RUNX2, ALP, OCN, Col I). CASC15's diagnostic value was assessed by the ROC curve. Proliferation (CCK-8) and

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… Biomineralization potential and biological properties of a new tantalum oxide (Ta( 2 )O( 5 ))-containing calcium silicate cement. Clin Oral Investig. 2022;26(2):1427–41. 51. Migliorini F, Maffulli N, Spiezia F, Tingart M, Maria PG, Riccardo G. …

Oral Food Supplement with Bio-Activated Silicium and Vitamins D3 and K2 in the Conservative Management of Osteoporotic Vertebral Compression Fractures.

Background: Osteoporotic vertebral compression fractures (OVCFs) are the most prevalent manifestation of osteoporotic skeletal disease, associated with severe pain, functional decline, and elevated risk of subsequent fractures. Conservative management remains the first-line approach for stable fractures, yet pain control is often suboptimal, and vertebral collapse progresses in up to 37% of patients. Bio-activated orthosilicic acid combined with vitamins D3 and K2 (BioSi-DK) may support fracture healing through complementary mechanisms acting on osteoblast differentiation, collagen synthesis,