Biography:

Abstract:

Purpose: The purpose of these studies was to compare the esthetic outcome and the infiltration capacity of three resin composite sealers: Biscover LV (Bisco Dental), Optiguard (Kerr) and Permaseal (Ultradent) to ICON (DMG, America) when treating artificial initial caries lesions with resin infiltration.

Methods: A panel of artificial initial caries lesion were created on buccal and lingual surfaces of 75 extracted human molars. Specimens were randomly assigned to 5 groups: ICON, Biscover, Optiguard, Permaseal and a control group (no infiltration). Teeth were hemi sectioned yielding two halves, each with a panel of artificial caries lesion. Lesions on one hemi section were used to assess the esthetic improvement following caries lesion infiltration with the 4 resins based on photographs evaluated with a 100-mm visual analogue scale (VAS) by 17 raters. Lesions on opposite hemi section were used to measure the resin infiltration area percentage (IA%) and the resin infiltration depth percentage (ID%) visualized by the confocal laser scanning microscope (CLSM).

Results: The mean IA% and ID% values were significantly higher for ICON, intermediate for Optibond and Permaseal and significantly lower for Biscover. ICON, Optiguard and Permaseal yielded significantly greater average VAS scores compared to Biscover. A moderately large positive correlation was noticed between the average VAS scores and the infiltration measures.

Conclusion: All the resin sealers Biscover, Optiguard and Permaseal infiltrated the artificial initial caries lesions, however ICON resulted in the deepest infiltration depth and largest infiltration area. The esthetic outcome following artificial initial caries lesion resin infiltration with Optiguard and Permaseal was similar to ICON and thus might be adequately used in caries resin infiltration.

Biography:

Abstract:

Objectives: The aim of this in-vitro study was to compare the shear bond strength (SBS) and to evaluate the adhesive remnant index (ARI) of stainless-steel orthodontic brackets bonded with two different orthodontic adhesives (Transbond XT and Bracepaste); decalcification at the base of the brackets were also recorded.

Materials and Methods: A total of 16 surfaces (buccal and lingual) of 8 extracted human molars were randomly divided into two groups. The shear bond strength was performed by using the Universal Testing Machine (Instron 5566 Test Bench) and the results were recorded in megapascals (MPa). The Adhesive Remnant Index (ARI) scores were determined with the LEICA MZ APO stereomicroscope. Additionally, the element analysis for the base of orthodontic brackets was done by using the scanning electron microscope (SEM) to detect the decalcification.

Results: The mean SBSs of Bracepaste (20.67 ± 5.76) and Transbond XT (22.29 ± 5.02) showed a clinically acceptable SBS values and there was no statistically significant difference according to one-way analysis of variance. As well as the ARI scores were not statistically significant difference in both groups based on Chi-square test. The SEM-EDS of elements analysis showed that Calcium and Phosphate were detected when the debonding take place at the enamel-adhesive interface.

Conclusion: There was no statistically significant difference between Transbond XT and Bracepaste, and it was concluded that both types have a sufficient bond strength to be used for bonding the orthodontic brackets.

Biography:

The purpose of this presentation is to carefully analyze the findings to date regarding a potential link between periodontitis and carcinogenesis; evaluate, critically review and explore the variety of potential study confounders and study criteria differences which suppress the accuracy and validity of the relationship claims being made; gain an appreciation of the biological plausibility of mechanisms which could be under pinning the relationship between the two diseases; and finally to conclude whether the current level, findings and quality of research is accurate in supporting the existence of the periodontitis cancer link. I will assess the potential link between periodontitis and several cancerous tumors types, and analyze the evidence regarding the biological plausibility for the potential association between periodontitis and cancer. The strongest association is present between periodontitis and oral cancer since each of the three studies looked into show a statistical link between both diseases. The international burden of cancer has risen every year, a trend that has been paralleled by the increase in periodontitis cases. Research undertaken by GLOBOCAN (2012) states there were7.6 million global cancer cases in 2008, and in 2012 there were14.1 million global cancer cases, an increase of 84%. Although there is a lack of recent statistical data related to periodontitis cases, between the years 1997 and 2005, there was an increase of 27% of adults aged between 35 and 44 who had Periodontal pocket depths greater or equal to 4 millimeters (Dye, 2012).

Abstract:

Kishan has published in several internationally renowned dental magazines, as well as having recently been accepted into his first international peer reviewed journal, the ‘Journal of Dental Health, Oral Disorders and Therapy’. He has presented work at 2 national conferences and also 2 international conferences in Sharjah and Dubai, UAE, and has also lectured alongside PhD level students in the past for the London Materials’ Society on the topic of MI dentistry. He was recently asked to give interviews for the British Dental Journal and Dental Town. Kishan is also on the honorary editorial board for Dental Town UK. Over the past two years, he has been working on a publication with Dr. Mandeep Ghuman entitled’ Periodontitis and Cancer: Is there a link?’ Aside from dentistry, he is a choreographer and lead dancer for the London based Shri Academy of Dance, as well as being a senior partner. He loves dancing and acting and has co‐choreographed for the Diwali Show for two years running!

Biography:

Dana Jafarpur is a sixth-year dental student at Shiraz University of Medical Sciences. Next semester she will be graduating summa cum laude from Shiraz Dental School and has written a book in forensic dentistry and published 5 papers during her undergraduate studies.

Abstract:

Objectives: To evaluate the effect of different Nano filled resin coatings on the staining susceptibility of glass ionomer restoratives after immersion in three food simulating solutions (FSS).

Methods: Five encapsulated glass-ionomer restoratives (Riva light-cure (SDI), Riva self-cure (SDI), Fuji II LC (GC), Fuji Bulk (GC) and Equia Forte Fil (GC)) and two Nano filled coatings (EQUIA Coat (GC) and G-Coat plus (GC)) were employed. All specimens were immersed in distilled water for 24 h and then subjected to a color measurement with a spectrophotometer. Then the samples were divided into three subgroups and immersed for another one week in lactic acid (0.1mol/L), coffee, and distilled water (control) respectively. The differences in the lightness and chromaticity values (ΔL, Δa, Δb) were determined and the total color change (ΔE) was calculated using the formula: ΔEn= [( ΔLn)2+( Δan)2 + ( Δbn)2]1/2

Results: Three-Way ANOVA showed a significant interaction effect between materials, coatings and solutions for the color change values. Therefore, one-way ANOVA was used to compare different variables between the materials. Color change values (ΔE) varied depending on the material and solution. G-Coat Plus exhibited lower color change values compared to the EQUIA-coated and the uncoated groups. The effect of immersion in FSS on color change values among materials varied depending on the type of coating.

Biography:

Gustavo Ferreira is a specialist in Sports Dentistry. He is the first President of the Brazilian Academy of Sports Dentistry (ABROE). He currently serves as the Partner- Director of Odontofitness, Botafogo Football Club.

Abstract:

The Sports Dentistry is an area of practice that includes theoretical and practical segments of Dentistry, aiming to investigate, prevent, treat and rehabilitate, understanding the influence of diseases of the oral cavity on the performance of professional and amateur athletes, with the purpose of improving athletic performance and prevent injuries, taking into account the physiological particularities of athletes, the modality they practice and the rules of sport. Technical-scientific knowledge regarding the sporting modality and the physiology of the exercise are of singular importance since both can influence differently in the process of development of alterations or injuries, as well as in the recovery process. Diagnosing and healing all factors that cause a decrease in the physical and psychological performance of the athlete, performing all the necessary procedures, so that the athlete has a standard of excellence when it comes to oral health. Sports dentist care includes: Doping; types of dental materials; dental erosion (isotonic consumption); adequate breathing; body posture (occlusion); facial trauma; dental trauma; mouthguard; periodontitis; follow clinical protocols; oral cancer; dental esthetic and dental disturbances in sleep.

Biography:

Richard Miron is currently an Adjunct Visiting Faculty in the Department of Periodontology in Bern, Switzerland where he completed his PhD studies since 2009. He has currently published over 150 peer-reviewed articles and lectures internationally on many topics relating to growth factors, bone biomaterials, and guided bone regeneration. He has recently been awarded many recent international prizes in dentistry and is widely considered as one of the top contributors to implant dentistry having won the ITI Andre Schroeder Prize in 2016, the IADR Young Investigator of the Year in the field of Implant Dentistry in 2015, and the American Academy of Implant Dentistry (AAID) Young Investigator grant award in 2014. He and Dr. Joseph Choukroun have recently edited the first textbook on PRF titled: “Platelet Rich Fibrin in Regenerative Dentistry: From Biological Background to Clinical Indications.

Abstract:

The use of platelet concentrates has had a long history of use in various fields of medicine as an autologous source of growth factors fabricated utilizing centrifugation of blood under various conditions. While platelet-rich plasma (PRP) was proposed as a first-generation platelet concentrate over 3 decades ago, over the past 10 years, platelet rich fibrin (PRF) has seen a steady increase in utilization for a variety of medical procedures due to its lack of anti-coagulation factors favoring fibrin clot formation and faster wound healing. More recently, further research has demonstrated that shorter and slower centrifugation spin cycles (‘the low-speed concept’ now termed advanced-PRF, A-PRF+) additionally favors wound healing by incorporating higher populations of white blood cells and progenitor cells within the PRF fibrin matrix leading to higher growth factor release within the local microenvironment. Parallel to these findings, the development of a liquid injectable PRF (i-PRF) provides a new formulation of liquid PRF without using anti-coagulation factors that may specifically be combined with currently available bone biomaterials favoring particle stability, angiogenesis and tissue integration. This course aims to highlight the recent advancements made with respect to the newest formulations of platelet concentrates and systematically presents when, where and why specific platelet concentrates may be utilized to further speed wound healing and tissue regeneration for various clinical indications faced in routine daily dental practice.

Biography:

Miguel Monteiro de Carvalho Neto is now working as an invited professor at Universidade do Estado do Rio de Janeiro (UERJ). He is also a Professor of French Implantology Association. Paris-France (afopi.com).

Abstract:

The beauty in implant dentistry is that every case is an individual challenge. An ideal implant treatment uses procedures, techniques, materials, and technologies that lead fast and on the shortest way to a maximally aesthetic result. The main goal is to achieve osseointegration and aesthetics in order to get long-term stability. For this, we need to obtain both, bone formation and gum thickness, as any failure in one of the 2 factors, will induce the loss of the second factor. The purpose of this presentation is to show participants the tissue stabilization factors and to demonstrate how to achieve the planned results at a single tooth replacement.

Biography:

Abstract:

Since the concept of Osseointegration was introduced by Brånemark et al, modern dental implants have been considered a safe and reliable option for replacing missing teeth. By placing dental implants abutment directly in in bone, considering different problems regarding its rejection, if every step is done by standard method the implant will be osseointegrated into the alveolar bone. Osseointegration depends on a multiple of factors such as implant material, surgical technique etc. The implant material mostly includes titanium and its alloys (mostly Titanium alloys Ti6Al4V) zirconia or even fiber-reinforced composite (FRC) which can be a potential material in the near future. For past few decades titanium and its alloys have been the material of choice for dental implant’s abutment. However, titanium has been shown to exhibit a variety of problems. Because of the high modulus of elasticity of the titanium alloys, dental implants made from the material can cause stress-shielding which may lead to periodontal bone loss. Moreover, few cases has been reported with induction of hypersensitivity to the titanium used as implant’s abutment also other problems such as wear debris and ion leakage can also be of concern with titanium dental implants. There is various factor concerning the success or failure of a dental implant by the manner in which stresses are transferred to the surrounding bone. Load transfer from implants to surrounding bone depends on the type of loading, the bone-implant interface, the quantity and quality of the surrounding bone and etc. Finite element analysis (FEA) allows researchers to predict stress distribution in the contact area of the implants with cortical bone and around the implants in trabecular bone. The high-performance biomaterial PEEK (polyether ether ketone) has been applied as implant material in many fields of medicine since the 1990ies. Due to its excellent properties, a high stability and elasticity (elastic modulus: 3-4 GPa), low density (1,32 g/cm3) and insolubility its application have been boosted in the field of dentistry as for the manufacturing of prosthetic reconstructions. Its elastic modulus, similarly, to that of cortical bone, it plays an important role as viable alternative to conventional implant materials such as titanium. This reduces the risk of stress shielding around the implant and makes it suitable for use even in orthopedic procedures and spinal surgery. The stable chemical structure of PEEK makes it extremely unreactive and inherently resistant to chemical and thermal degradation. The inertness of the polymer also explains its biocompatibility, which has been shown both in vitro and in vivo. In this review article we inspect the probable advantages of using the PEEK as a stress shielding material in dental implant’s abutment.