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https://www.readbyqxmd.com/read/29140971/effect-of-s-mutans-and-s-sanguinis-on-growth-and-adhesion-of-p-gingivalis-and-their-ability-to-adhere-to-different-dental-materials
#1
Yan Tu, Xiaolong Ling, Yadong Chen, Yuan Wang, Na Zhou, Hui Chen
BACKGROUND Caries and periodontal diseases are caused by the biofilm formed by caries- and periodontal disease-related bacteria. Specific biofilms could be formed on different filling materials in oral cavity. Thus, to explore the inhibition effect of restorative filling materials on biofilm formation is of great significance in the treatment of caries and periodontal disease. MATERIAL AND METHODS The supernatants of S. mutans, S. sanguinis, and P. gingivalis suspension were combined with BHI broth. After 24 h, the live P...
November 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29140389/influence-of-rhbmp-2-on-guided-bone-regeneration-for-placement-and-functional-loading-of-dental-implants-a-radiographic-and-histologic-study-in-dogs
#2
Heithem Ben Amara, Jung-Won Lee, Jung-Ju Kim, Yun-Mi Kang, Eun-Jung Kang, Ki-Tae Koo
PURPOSE: Evidence on the outcomes of functional loading placed in recombinant human bone morphogenetic protein 2 (rhBMP-2)/acellular collagen sponge (ACS)-induced bone is lacking. The aim of this study was to verify whether guided bone regeneration (GBR) with rhBMP-2/ACS enhances regeneration of missing bone and osseointegration of dental implants subject to functional loading. MATERIALS AND METHODS: Two bilateral standardized large saddle-type defects (≈10 × 10 × 6 mm) were surgically created in each mandible of seven beagle dogs 2 months after tooth extraction...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140388/titanium-activates-the-dna-damage-response-pathway-in-oral-epithelial-cells-a-pilot-study
#3
Fernando Suárez-López Del Amo, Ivan Rudek, Vivian Petersen Wagner, Manoela D Martins, Francisco O'Valle, Pablo Galindo-Moreno, William V Giannobile, Hom-Lay Wang, Rogerio M Castilho
PURPOSE: To evaluate the effect of titanium (Ti) particles on oral epithelial cell homeostasis and the potential of dental implants to release Ti debris upon insertion. MATERIALS AND METHODS: Dental implants with varying surface treatments were employed to determine the feasibility of particle release during implant placement as well as the impact of free Ti debris on oral epithelial cells. Ti particles derived from implant surfaces were isolated and cultured in direct contact with normal oral epithelial cells for 48 hours...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140387/full-mouth-rehabilitation-with-calvarium-bone-grafts-and-dental-implants-for-a-papillon-lef%C3%A3-vre-syndrome-patient-case-report
#4
Bassam M Kinaia, Kristyn Hope, Ahmed Zuhaili, Jean Francois Tulasne
Papillon-Lefèvre syndrome (PLS) is a rare autosomal recessive disorder of keratinization associated with palmoplantar keratoderma and severe periodontitis resulting in complete edentulism in late adolescence. The pathognomonic dental features of PLS are pathologic migration, hypermobility, and exfoliation of the teeth without any signs of root resorption. It has been suggested that an effective way to treat PLS patients presenting early in the disease progression is extraction of the erupted primary dentition or hopeless permanent teeth followed by antibiotic coverage with periodontal therapy for the remaining teeth...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140382/implant-mandibular-overdentures-retained-by-immediately-loaded-implants-a-1-year-randomized-trial-comparing-the-clinical-and-radiographic-outcomes-between-mini-dental-implants-and-standard-sized-implants
#5
Kostas Zygogiannis, Irene Ha Aartman, Azin Parsa, Ali Tahmaseb, Daniel Wismeijer
PURPOSE: The aim of this 1-year randomized trial was to evaluate and compare the clinical and radiographic performance of four immediately loaded mini dental implants (MDIs) and two immediately loaded standard-sized tissue-level (STL) implants, placed in the interforaminal region of the mandible and used to retain mandibular overdentures (IODs) in completely edentulous patients. MATERIALS AND METHODS: A total of 50 completely edentulous patients wearing conventional maxillary dentures and complaining about insufficient retention of their mandibular dentures were divided into two groups; 25 patients received four MDIs and 25 patients received two STL implants...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140381/consistency-of-dental-hygiene-therapy-utilizing-various-dental-hygiene-instrumentation-and-its-effect-on-peri-implant-health-and-survival-of-dental-implants-a-retrospective-study
#6
Sarah B Hoerler, Sandra K Nietz, Victoria L Zook, Christine M Lohse, Thomas J Salinas, Alan B Carr, Daniel A Assad
PURPOSE: The purpose of this retrospective study was to provide practice-based evidence to determine if the consistency of dental hygiene therapy, despite utilizing instrumentation literature that has proven to cause alterations to implant surfaces, affects peri-implant health or survival. MATERIALS AND METHODS: The study sample comprised patients with implant-supported full-arch fixed dental prostheses who were distributed into two groups. The consistent hygiene group patients had dental hygiene therapy at a minimum biannually and were exposed to at least three dental hygiene instrument materials...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140378/perception-by-osseointegrated-dental-implants-supporting-a-fixed-prosthesis-a-prospective-study
#7
Purva V Bakshi, Srinath Thakur, Sudhindra Kulkarni
PURPOSE: Osseointegrated implants have been shown to transmit a certain sensibility termed as osseoperception. The purpose of this study was to determine the perception by implants over a period of 6 months after loading in comparison to the natural dentition. MATERIALS AND METHODS: Twenty subjects (ages 40 to 50 years) were included in this split-mouth clinical trial. The subjects were divided into two groups (n = 10) as follows: group 1-subjects with recently cemented implant-supported fixed prosthesis opposing natural teeth; group 2-subjects with recently cemented implant-supported fixed prosthesis in both arches...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140377/influence-of-the-prosthetic-index-on-fracture-resistance-of-morse-taper-dental-implants
#8
Karla Zancopé, Caio César Dias Resende, Carolina Guimarães Castro, Rafael Calixto Salatti, Flávio Domingues das Neves
PURPOSE: Manufacturers have inserted a prosthetic index, an internal hexagon to guide prosthetic components inside Morse taper implants. However, it is still unclear if this mechanism could decrease the mechanical strength of Morse taper implants. The aim of this study was to evaluate the influence of the prosthetic index inside Morse taper implants on fracture resistance compared with nonindexed implants. MATERIALS AND METHODS: Fifty-seven Morse taper implants, with 11...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140376/evaluating-maxillary-sinus-septa-using-cone-beam-computed-tomography-is-there-a-difference-in-frequency-and-type-between-the-dentate-and-edentulous-posterior-maxilla
#9
Martina Schriber, Thomas von Arx, Pedram Sendi, Reinhilde Jacobs, Valerie Ga Suter, Michael M Bornstein
PURPOSE: To analyze and compare the frequency, type, and location of maxillary sinus septa in patients with a dentate and an edentulous posterior maxilla using cone beam computed tomography (CBCT) imaging. MATERIALS AND METHODS: The study consisted of 100 maxillary sinuses: 50 from patients with a dentate and 50 from patients with an edentulous posterior maxilla. The aim was to assess the frequency, morphology, and location of maxillary sinus septa in axial, sagittal, and coronal CBCT images...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140374/implant-abutment-connections-a-review-of-biologic-consequences-and-peri-implantitis-implications
#10
Yuya Sasada, David L Cochran
Clinicians very often have seen marginal bone loss around dental implants at the crest level early on after implant placement and uncovering. Early clinical publications had suggested that this bone loss occurred during the first year of loading. Thus, numerous attempts have been made to minimize or eliminate such bone loss. However, the timing and reason for this bone loss are not always apparent. The objective of this study was to review the evidence regarding marginal bone loss around dental implants from the standpoint of biologic consequences to help understand marginal bone changes around dental implants...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140372/cytotoxicity-of-dental-implants-the-effects-of-ultrastructural-elements
#11
Ebru Cal, Vildan Bozok Cetintas, Hayal Boyacioglu, Pelin Güneri
PURPOSE: In this in vitro study, the purpose was to assess the cytotoxicity profiles of seven commercial dental implant materials by using cell culture methods on an osteoblastic cell line. MATERIALS AND METHODS: The microstructure of seven commercial dental implants (each given a letter code) was investigated via scanning electron microscopy and energy-dispersive x-ray analysis. Medium extracts were collected on the first and fifth days for each group and tested using MC3T3-E1 cell line...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140371/biofunctionalization-of-titanium-granules-with-simvastatin-for-improving-osteogenic-activity-and-antibacterial-properties-ex-vivo-study
#12
Zahra Gorgin Karaji, Behzad Houshmand, Shahsanam Abbasi, Sara Shafiei, Shahab Faghihi
PURPOSE: Titanium-based biomaterials present good biocompatibility, while their osseointegration and antibacterial properties need to be improved. This study aimed to enhance the bone-bonding ability of titanium-based granules, which are intended to be used as bone graft. MATERIALS AND METHODS: The titanium granules were anodized in ethylene glycol-based electrolyte and subsequently annealed to be loaded separately with simvastatin. The samples were then inspected with attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) for drug loading...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140368/in-vitro-bioactivity-test-of-real-dental-implants-according-to-iso-23317
#13
Martina Kolafová, Jan Šťovíček, Jakub Strnad, Josef Zemek, Jiři Dybal
PURPOSE: The goal of this study was to compare the in vitro bioactivity in simulated body fluid (SBF) of commercially available dental implants. MATERIALS AND METHODS: Bioactivity, according to ISO 23317, of commercially available dental implants with various surface modifications (BIO-surface, SLA, SLActive, TiUnite, and OsseoSpeed) was tested in SBF for 1 and 3 weeks. Surface characterizations, especially calcium and phosphorus surface content before and after the immersion in SBF, were performed...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140101/fabrication-of-a-surgical-guide-for-lateral-sinus-augmentation
#14
Robert Stanley, Gregori M Kurtzman
Cone-beam computed tomography (CBCT) scans are used in planning implant treatment to help determine volume of available bone and identify anatomical structures. This enhances planning, particularly when inadequate bone is present in the posterior maxilla due to proximity of the inferior aspect of the maxillary sinus to the crestal bone. To place dental implants into this area, sinus augmentation is often needed to provide sufficient bone volume to support implants and allow prosthetic loading with predictable long-term results...
November 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/29140099/oral-healthcare-for-persons-with-intellectual-or-developmental-disabilities-why-is-there-a-disparity
#15
Michael Milano
Despite some progress, a significant disparity still exists in oral healthcare between individuals with intellectual or developmental disabilities and the general population. Barriers generated by finances, a lack of appropriately trained dental providers, and the patients themselves combine to create significant challenges to providing dental care. However, strategies exist that can help to decrease the magnitude of these hurdles so this disparity can be minimized.
November 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/29140074/facile-and-versatile-strategy-for-construction-of-anti-inflammatory-and-antibacterial-surfaces-with-polydopamine-mediated-liposomes-releasing-dexamethasone-and-minocycline-for-potential-implants-applications
#16
Xiao Xu, Lixin Wang, Zuyuan Luo, Yaofeng Ni, Haitao Sun, Xiang Gao, Yongliang Li, Siqi Zhang, Yan Li, Shicheng Wei
Reducing early nonbacterial inflammation induced by implanted materials and infection resulting from bacterial contamination around the implant-abutment interface could greatly accelerate implant osseointegration and reduce implant failure, which would be of clinical significance. In this study, we developed a facile and versatile strategy for the construction of anti-inflammatory and antibacterial surfaces on implants, such as orthopedic/dental implants. Briefly, the surfaces of polystyrene (PS) culture plates were first coated with polydopamine and then decorated with dexamethasone plus minocycline-loaded liposomes (Dex/Mino liposomes), which was confirmed by contact angle goniometry, X-ray photoelectron spectroscopy, and fluorescence microscopy...
November 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29139614/human-dental-stem-cell-derived-transgene-free-ipscs-generate-functional-neurons-via-embryoid-body-mediated-and-direct-induction-methods
#17
Ikbale El Ayachi, Jun Zhang, Xiao-Ying Zou, Zongdong Yu, Wei Wei, Kristen M S O'Connell, George T-J Huang
Induced pluripotent stem cells (iPSCs) give rise to neural stem/progenitor cells (NSCs), serving as a good source for neural regeneration. Here, we established transgene-free (TF) iPSCs from dental stem cells (DSCs) and determined their capacity to differentiate into functional neurons in vitro. Generated TF iPSCs from stem cells of apical papilla (SCAP) and dental pulp stem cells (DPSCs) underwent two methods -- embryoid body (EB)-mediated and direct induction, to guide TF-DSC iPSCs along with H9 or H9 Syn-GFP (human embryonic stem cells) into functional neurons in vitro...
November 15, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29139600/arcr-modulates-biofilm-formation-in-the-dental-plaque-colonizer-streptococcus-gordonii
#18
Jill C Robinson, Nadia Rostami, John Casement, Waldemar Vollmer, Alexander H Rickard, Nicholas S Jakubovics
Biofilm formation and cell-cell sensing by the pioneer dental plaque coloniser Streptococcus gordonii is dependent upon arginine. This study aimed to identify genetic factors linking arginine-dependent responses and biofilm formation in S. gordonii. Isogenic mutants disrupted in genes required for biosynthesis or catabolism of arginine, or for arginine-dependent gene regulation, were screened for their ability to form biofilms in a static culture model. Biofilm formation by a knockout mutant of arcR, encoding an arginine-dependent regulator of transcription, was reduced to <50% that of the wild-type whereas other strains were unaffected...
November 15, 2017: Molecular Oral Microbiology
https://www.readbyqxmd.com/read/29139567/effectiveness-of-an-oral-health-educational-intervention-for-individuals-with-special-health-care-needs-from-a-southern-brazilian-city
#19
Andreia Drawanz Hartwig, Vanessa Müller Stüermer, Ivam Freire da Silva-Júnior, Lisandrea Rocha Schardosim, Marina Sousa Azevedo
AIM: To assess the effects of an oral health education strategy targeted at students with disabilities. METHODS: This quasi-experimental study included students aged 7 to 24 years. The intervention was conducted for 5 weeks and divided into 2 phases: (1) comprising supervised toothbrushing and educational activities to students; (2) verbal oral health instructions and oral hygiene demonstration targeted at the caregivers. A clinical examination was conducted to evaluate the dental debris and gingival bleeding before the intervention, and the Wilcoxon test was performed after phase 1 and 2 for comparisons between paired samples...
November 15, 2017: Special Care in Dentistry
https://www.readbyqxmd.com/read/29139168/hunter-gatherer-dental-pathology-do-historic-accounts-of-aboriginal-australians-correspond-to-the-archeological-record-of-dental-disease
#20
Judith Littleton
OBJECTIVES: Studies of hunter-gatherer oral pathology, particularly in Australia, often focus upon dental wear and caries or assume that historic studies of Aboriginal people reflect the precontact past. Consequently the range of population variation has been underestimated. In this paper dental pathology from human remains from Roonka are compared with a model of dental pathology derived from historic studies. The aim is to identify aspects of dental pathology indicative of regional or intra-population diversity...
November 15, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
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