24^th Global Dentists and Pediatric Dentistry Annual Meeting June 11-12, 2018 London, UK

Dobrinka Mitkova Damyanova has gained her Master degree of Dental Medicine in the year 1997 in Medical University, Faculty of Dental Medicine - Sofia, Bulgaria. She has completed her PhD in Medical University Varna, Bulgaria in 2017. Since 2008, she is an Assistant in the Department of Conservative Dentistry and Pediatric Dentistry and since 2013 she is working in the Department of Pediatric Dentistry, Faculty of Dentistry-Medical University of Varna. rnrnSirma Todorova Angelova completed her Graduation at University of Economics, Varna, Bulgaria and Master’s degree in International Financial Affairs. Since 2011, she has been working as an Assistant Professor in Department of Pediatric Dentistry, Faculty of Dental Medicine, Medical University, Varna. Her occupation is related to academic teaching at Pre-Clinics of Pediatric Dentistry, Dental Prophylaxis and Clinics of Pediatric Dentistry.rn

Aim: The aim is to determine the relationship between the OHI-S, caries incidence and age for children\'s groups.rnMaterials & Methods: Object of observation: First group - 100 children aged 4.5 and 6 years without treatment with varnish CV. Second group - 100 children aged 4, 5 and 6 years treated with Clinpro ™ White Varnish with TCP (Tri-Calcium phosphate) (3M) – CV. Oral-Hygiene Index, OHI-S Greene & Vermillion (PI / 6 + CI / 6) - (Modified) is used to establish Oral Hygiene status. Location of the study – University Medical Dental Center Varna, Clinical Halls for Children\'s Dentistry, Faculty of Dental Medicine – Varna. A specialized STATISTICA 10.0 package is used for statistical analysis of the data.rnResults: The resulting p-levels are less than 0.05, indicating that the dmft variable (dental caries frequency) also depends on the OHI-S values and the age factor of the study groups of children. The above table shows that there is a statistically significant difference in OHI-S mean values, as p-level = 0.0000001 < 0.05. The hypothesis of equivalence of mean values at a significance level of 0.05 is discarded. The presence of a statistically significant difference in average of OHI-S for untreated and OHI-S for treated children means that the index values for untreated children are higher than those for the treated children (p-level = 0.0000001, p < 0.05).rnConclusion: A Poisson regression for dependent values of the dmft index of OHI-S and lower jaw, factor dmft /p-levels of less than p<0.05/. We found a statistically significant difference.rnRecent Publications rnrn1. Ten Cate\'s (2013).Oral Histology, Nanci: Elsevier; 122 p.rnrn2. Chou R, Cantor A, Zakher B, Mitchell J P and Pappas M (2013). Preventing dental caries in Children, 5 years: systemic review updating USPSTF recommendation. Pediatrics. 132(2):332-35.rnrn3. Dos Santos AP, Nadanovsky P and de Oliveira BH (2013). A systematic review and meta-analysis of the Effects of fluoride toothpastes on the prevention of dental caries in the primary dentition of preschool children. Community Dentistry and Oral Epidemiology; 41 (1): 1-12.rnrn4. Nyvad B, et al (2013). Dental caries in a molecular microbiological perspective. Caries Res. 47: 89–102.rnrn5. Relly MT, De Jesus Vinas J and Hatch J P (2013). Effectiveness of a sealant compared with no sealant in preventing enamel demineralization in patients with fixed orthodontic appliances: A prospective clinical trial. American Journal of Orthodontics and Dentofacial Orthopedics. 143(6):837-844.

Sirma Todorova Angelova completed her Graduation at University of Economics, Varna, Bulgaria and Master’s degree in International Financial Affairs. Since 2011, she has been working as an Assistant Professor in Department of Pediatric Dentistry, Faculty of Dental Medicine, Medical University, Varna. Her occupation is related to academic teaching at Pre-Clinics of Pediatric Dentistry, Dental Prophylaxis and Clinics of Pediatric Dentistry.rnrnDobrinka Mitkova Damyanova has gained her Master degree of Dental Medicine in the year 1997 in Medical University, Faculty of Dental Medicine - Sofia, Bulgaria. She has completed her PhD in Medical University Varna, Bulgaria in 2017. Since 2008, she is an Assistant in the Department of Conservative Dentistry and Pediatric Dentistry and since 2013 she is working in the Department of Pediatric Dentistry, Faculty of Dentistry-Medical University of Varna. rn

Statement of the Problem: Nephrological noxae exert a complex of harmful effects upon tissues, organs and systems of the body. Hard teeth structures and soft tissues into the oral cavity are also upon the deteriorative impacts of kidney diseases. The state of gingival tissues serves as one of the most essential and explicit criteria of assessment of caries risk. The purpose of our study is to investigate the gingival status in patients of child’s age suffering from pyelonephritis, compared with healthy children. rnrnMaterials & Methodology: The subject of this research is 92 males and females from 0 to 18 years of age, hospitalized by the reason of established pyelonephritis. The group of healthy controls includes a number of 42 children characterized with no common health disorders. We have implemented the clinical method of registration of the gingival index GI by Lȍe-Silness. Descriptive analysis concerning both of the groups of the investigation has also been applied. rnrnResults: The average value of the index of GI is higher in patients with diagnosed pyelonephritis compared with healthy children. The maximal value of the indicator for gingival inflammation is considerably lower in children with no kidney disorders in comparison to these with the diagnosis of pyelonephritis. The histogram of GI in patients with pyelonephritis illustrates that among the predominant ratio of these participants the value of GI fluctuates between 0, 99 and 2, 00. The histogram of GI in healthy controls demonstrates that among the prevailing ratio of these children has been recorded the value of GI equal to 1, 18. rnrnConclusion: Taking into consideration the evaluation of the status of gingival tissues among the representatives of both groups involved into the study, we can conclude that children suffering from the kidney disorder of pyelonephritis are in higher risk of tooth decay in relation to healthy participants.rn

Shaimaa Mahfouz has completed her PhD in 2015 from Faculty of Dentistry Suez Canal University and Post Doctoral studies from the same University. She is a Lecturer at Pediatric dentistry department in Suez Canal University. She has published around 3 papers in national journals.

Introduction: Many studies used layering technique for placement of composite restoration. Layering technique in which the material can be placed in increments of 2-mm or less, this method results in adequate light infiltration and improvement of polymerization of composite resin restoration. Bulk- fill resin composites introduced into cavities in one increment that up to 4 –mm, this thickness offers several advantages of saving time and more simple technique of placement the restoration. No clinical study tested the efficiency of packable bulk- fill composite resin with maximum 4 mm depth in class I cavity in children.\r\n \r\nAim: To evaluate the one- year clinical performance of the packable bulk fill and nano resin composite in class I restorations in children and adolescents. \r\n\r\nMaterials & Methods: Thirty three pairs of first permanent molars had class I restorations were placed in (33) children, each patient received two class I restorations were similar as possible. In all cavities, single bond adhesive (Xeno V+) was applied. One cavity of each pair was randomly assigned to be restore with packable bulk fill resin composite (Quixfil) in increment up to 4 mm. Anther cavity was restored with Nano hybrid resin composite (Esthet-X flow) placed in 2 mm increments. \r\n\r\nFinding: At all evaluation periods of, no statistically significant differences were detected between packable bulk fill composite resin and Nano hybrid composite resin in marginal discoloration, surface roughness and caries detection, whereas statistically significant differences between both materials in anatomical form and marginal discoloration parameters in favor with packable bulk fill.\r\n\r\nRecent Publications \r\n\r\n1. ElBaz Gh and Mahfouz Sh (2017) Efficacy of two different modalities on masking white spot lesions in children with molar incisor hypomineralization EDJ; 63:353-360.\r\n\r\n