Oral health knowledge, practice and dental plaque maturity status of hearing-impaired children

Hearing impairment is an unseen handicapped that lead to communication barriers which might impede knowledge transfer. The aim of this study was to compare the oral health knowledge, practice and dental plaque maturity between hearing-impaired (HI) and normal children. A cross sectional study was conducted among children aged 7-14 years old. The HI children were recruited from a special school for the deaf while the normal children were from the primary and secondary schools in Bachok, Kelantan. The oral health knowledge and practice was assessed by face to face interview whilst the dental plaque maturity status was evaluated using GC Tri Plaque ID Gel™ (TPID). The data was analysed using IBM SPSS version 22. HI children had poor oral health knowledge and oral health practice compared to normal children (p<0.05). HI children had significantly more matured plaque compared to normal children with mean (SD) DPMS of 1.8 (0.57) and 1.3 (0.20), respectively (p<0.001). In conclusion, there were poor oral health knowledge, poor oral hygiene practice and high plaque maturity among HI children

Study on the gjb3 and gjb6 gene mutations among Malays with nonsyndromic hearing loss

Hearing loss is the most common sensory disorder in human. Previous journals reported that GJB2 gene is the most important gene involved in non-syndromic hearing loss; and GJB6 gene is the second most which contributed to. This study is to screen mutations in GJB2 and GJB6 gene among Malay patients with non-syndromic hearing loss. Ninety one patients and equal number of normal hearing subjects were recruited for this study after getting informed consent. DNA samples were collected using sterile buccal swab. After DNA extraction, genomic DNA was amplified then screened using dHPLC technique. Certain samples were sequenced to confirm the type of mutation. The result showed that only a few samples having mutations in GJB2 gene, while no sample having mutation of GJB6 gene

Dental anomalies And Facial Profile abnormality Of The Non-Syndromic Cleft Lip and Palate Children In Kelantan.

Cleft lip and palate (CLP) has become a major public health problem affecting one in every 500 1000 births worldwide (1)

Evaluation of Microleakage Between Different Post and Core Systems Under Gradual Loading: an In-Vitro Study

Svrha: Istraživanje je usmjereno na usporedbu u razlici spojnog prodora boja između svjetlovodnih kolčića everStick, Parapost XP i Parapost i kontrolnih skupina pod postupnim opterećenjem. Materijali i metode: Šezdeset osam ljudskih maksilarnih trajnih sjekutića podijeljeno je u četiri skupine. Svaki uzorak endodontski je tretiran tehnikom instrumentacije i pripremljen za svaki sustav kolčića prema eksperimentalnim skupinama. Nakon toga kolčić je cementiran u korijenski kanal. Oblikovane nadogradnje od kompozitnog materijala cementirane su u laboratorijski izrađene metalne krunice. Svi su uzorci termociklirani, osim onih u kontrolnoj skupini. Sve su skupine podvrgnute postupnom opterećenju od 0 N do 50 N u 100 ciklusa. Uzorci su poprečno prerezani i izmjerene su dubine penetracije boje uzduž kolčića. Podatci su uneseni u SPSS ver. 22 i analizirani dvosmjernim testom ANOVA-e. Rezultati: Nije bilo značajne razlike u spojnom prodoru boje ni u jednoj skupini (p – vrijednost > 0,05). No zabilježena je značajna razlika u postotku prodora boje između svih skupina (p – vrijednost 0.05). However, there was a significant difference in percentage of marginal dye penetration between all groups (p-value<0.05); post-hoc comparison showed significant difference between Fiber White and Control groups (p-value=0.009). Conclusion: All the groups showed dye penetration but the percentage was significant only between Parapost Fiber White and the control groups

Citation classics on dental caries: a systematic review

Objective A systematic search was performed for the identification and analysis of the 100 most often cited articles on dental caries and to highlight the changing trends in the field of dentistry over time. Materials and Methods The search was performed without any restriction on the study design, publication year, or language using the Web of Science (WoS) group of Clarivate Analytics enabling the search through “All Databases.” Based on the citation count as available in WoS, the articles were sorted in a descending manner. Information regarding each article was then extracted, which included its authorship, counts of citation (in other databases), citation density, current citation index (2019), publication year, country of publication, journal of article, evidence level based on study design, and keywords description. Results The count of citation for each article varied in each database, that is, 175 to 2,003 in WoS, 89 to 1,981 in Scopus, and 126 to 3,492 when searched in Google Scholar. The highest number of articles (n = 10) related to dental caries were published in 2004. A total of 301 authors made valuable contributions to this field, out of which J.D. Featherstone had coauthored 6 articles. A significant negative correlation (p < 0.01) was found between the age of the article and the citation density (r =–0.545). However, a nonsignificant correlation (p = 0.952) occurred between the age of publication and the citation count (r = 0.006). Conclusion The results of this systematic review provide a critical appraisal of the context underpinning scientific developments in the field of dental caries and also highlighted trends in clinical management and research

Safety Comparison of Over the Counter Bleaching with Professionally Prescribed Home Bleaching Agent

Aims: This aimed to compare the colour changes, microhardness, and surface roughness of the human natural tooth after bleaching treatment with a professional home bleaching agent and over-the-counter (OTC) bleaching agent. Settings and Design: This was an in vitro study using extracted human teeth stained with human blood as specimens. Materials and Methods: Fifty-seven human natural teeth were embedded in acrylic of 2.5 mm thickness and 14 mm × 8 mm surface area. The samples were stained with human blood before they were divided into three groups (n = 19 per group) of control (C), Professional Bleaching Opalescence PF 15% (PB), and OTC Whitelight Tooth Whitening set (WL) before being treated with the respective bleaching agents for 10 days. Color changes were measured as colorimetric measurements (L*, a*, and b* values) were recorded during prestaining, poststaining, and postbleaching, while microhardness and surface roughness measurements were recorded for pre- and postbleaching. Statistical Analysis: Statistical analysis was done with SPSS (IBM Statistic, California, USA) version 22.0. Paired t-test and nonparametric analysis (Wilcoxon Signed-Rank Test) were used to analyze the data. P value was set as significant at P < 0.05. Results: The color changes in PB group was not significantly better compared with WL group (PB: 12.2 [4.07] and WL: 12.2 [4.32]). Whereas significant difference was noticed in microhardness after bleaching in PB group with a higher VHN number (500.4 [121.10]) compared with WL group (471.0 [114.47]) . The surface roughness (Ra) remain the same for all experimental groups. Conclusions: Both professional home bleaching agent and OTC bleaching agents showed similar efficacy, with no effect on surface roughness, and both caused an increase in microhardness

Cost analysis of facial injury treatment in two university hospitals in Malaysia: a prospective study

Objective: Facial injury (FI) may occur in isolation or in association with injuries to other parts of the body (facial and other injury [FOI]). The objective of this study was to determine the direct treatment costs incurred during the management of facial trauma. Materials and methods: A prospective cohort study on treatment cost for FIs and FOIs due to road-traffic crashes in two university hospitals in Malaysia was conducted from July 2010 to June 2011. The patients were recruited from emergency departments and reviewed after 6 months from the date of initial treatment. Direct cost analysis, comparison of cost and length of hospital stay, and Injury Severity Score (ISS) were performed. Results: A total of 190 patients were enrolled in the study, of whom 83 (43.7%) had FI only, and 107 (56.3%) had FOI. The mean ISS was 5.4. The mean length of stay and costs for patients with FI only were 5.8 days with a total cost of US$1,261.96, whereas patients with FOI were admitted for 7.8 days with a total cost of US$1,716.47. Costs doubled if the treatment was performed under general anesthesia compared to local anesthesia. Conclusion: Treatment of FI and FOI imposes a financial burden on the health care system in Malaysia

Evaluation of Microleakage Between Different Post and Core Systems Under Gradual Loading: an In-Vitro Study

Objective: This study aimed to compare the difference in marginal dye penetration between ever-Stick, Parapost XP, Parapost fiber white and control groups under gradual loading. Materials and Methods: Sixty-eight human maxillary permanent incisors were divided into four groups. Each specimen was endodontically treated with step-back technique and prepared for each post system according to experimental groups, subsequently cemented in the canal. Composite resin cores were built and laboratory fabricated metal crowns were cemented. All specimens except those in the control group were subjected to thermal cycling. All groups were subjected to gradual loading from 0N-50N for 100 cycles. Specimens were sectioned transversely and the depths of dye penetration along the post were measured. Data were entered in SPSS ver. 22 and analyzed using two-way ANOVA test. Results: There was no significant difference in marginal dye penetration between each group (p-value>0.05). However, there was a significant difference in percentage of marginal dye penetration between all groups (p-value<0.05); post-hoc comparison showed significant difference between Fiber White and Control groups (p-value=0.009). Conclusion: All the groups showed dye penetration but the percentage was significant only between Parapost Fiber White and the control groups

The antibacterial efficacy of silver diamine fluoride (SDF) is not modulated by potassium iodide (KI) supplements: A study on in-situ plaque biofilms using viability real-time PCR with propidium monoazide.

Silver diamine fluoride (SDF) is commonly used to arrest caries lesions, especially in early childhood caries. Recently, it was suggested that SDF can be combined with potassium iodide (KI) to minimize the discoloration of demineralized dentine associated with SDF application. However, the antibacterial efficacy of SDF alone or combined with KI on in-situ biofilm is unknown. Hence, we compared the anti-plaque biofilm efficacy of two different commercially available SDF solutions, with or without KI, using an in-situ biofilm, analysed using viability real-time PCR with propidium monoazide (PMA). Appliance-borne in-situ biofilm samples (n = 90) were grown for a period of 6 h in five healthy subjects who repeated the experiment on three separate occasions, using a validated, novel, intraoral device. The relative anti-biofilm efficacy of two SDF formulations; 38.0% Topamine (SDFT) and 31.3%, Riva Star (SDFR), KI alone, and KI in combination with SDFR (SDFR+KI) was compared. The experiments were performed by applying an optimized volume of the agents onto the biofilm for 1min, mimicking the standard clinical procedure. Afterwards the viability of the residual biofilm bacteria was quantified using viability real-time PCR with PMA, then the percentage of viable from total bacteria was calculated. Both SDF formulations (SDFT and SDFR) exhibited potent antibacterial activities against the in-situ biofilm; however, there was non-significant difference in their efficacy. KI alone did not demonstrate any antibacterial effect, and there was non-significant difference in the antibacterial efficacy of SDF alone compared to SDF with KI, (SDFT v SDFR/KI). Thus, we conclude that the antibacterial efficacy of SDF against plaque biofilms is not modulated by KI supplements. Viability real-time PCR with PMA was successfully used to analyze the viability of naturally grown oral biofilm; thus, the same method can be used to test the antimicrobial effect of other agents on oral biofilms in future research