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- ItemMarginal and Internal Crown Fit Evaluation of CAD/CAM versus Press-Laboratory Lithium Disilicate Crown(Al-Quds University, Deanship of Scientific Research, 2019-09-10) Musleh, AymanThis study aims to evaluate the marginal gap and internal adaptation of lithium disilicate crowns fabricated by conventional press-dental laboratory and CAD/CAM systems. The size of the marginal and internal gaps of crowns is fabricated with the two techniques in the current study; the research will be performed in an effort to improve clinical outcomes. Tooth #14 was prepared per standard specification to receive the lithium disilicate crowns. Sixty Type IV gypsum dies tooth #14 were duplicated and divided into three groups (n=30). The lithium disilicate CAD/CAM system (Group 1) was fabricated with the E4D CAD/CAM system according to manufacturer's instructions. For press-dental laboratory made crowns, impressions were taken on the region area with two-step impression techniques with light and putty consistency VPS. Impressions were sent to two independent dental laboratories (Groups 2 and 3) for fabricating the monolithic press lithium disilicate crown. Tooth #14 was optically scanned and lithium disilicate blocks were used to fabricate crowns using CAD/CAM technique. Polyvinyl siloxane impressions of the prepared teeth were made and monolithic pressed lithium disilicate crowns were fabricated. The marginal gap was measured using optical microscope at 160× magnification (Keyence VHX-5000, Japan) and internal fit of the crowns was assessed by the silicone replica technique. Four sections of each replica were obtained, and each section was evaluated at four points: marginal gap (MG), axial wall (AW), axio-occlusal edge (AO) and Centro-occlusal wall (CO), using an image analyzing software. Statistical analysis was performed using ANOVA and chi-squared test. Study design: Experimental. Setting of study: University of Palestine and Laser Specialized center For Esthetic Dentistry.
- ItemThe Average of Skill in Fixed Prosthesis among Dental Students in the University of Palestine in 2018-2019(Al-Quds University, Deanship of Scientific Research, 2019-09-10) Othman, LenaProstheses are used to rehabilitate mastication, improve esthetics, and aid speech. Teeth require preparation to receive restorations. These preparations must be based on fundamental principles from which basic criteria can be developed to help predict the success of prosthodontic treatment. Among the fundamental principles of tooth preparation are the retention and resistance forms. Both can be achieved by providing a geometrical shape for the prepared tooth with minimal occlusal convergence angles (Hinnara S,2017). The convergence angle (CA) of a tooth preparation is the combined angle made by opposing axial walls when measured against the vertical long axis of the tooth. Textbooks in fixed prosthodontics often recommend an ideal convergence angle of approximately 5° (4–6°) and an acceptable range of 4–14° (Journal of Dental Education,2013). Dental students studying at the University of Palestine in previous years had difficulties in preparing teeth to achieve the generally recommended CA of less than 12°. This Experimental study aims to determine applicability of convergence angles among dental students in the University of Palestine in 4th and 5th year, and compare the reliability of the evaluation done by two investigators with that of AutoCAD. One hundred full crown casts will be selected randomly from preparations made by fourth and fifth year undergraduate students. Two images will be obtained from each of the 200 dies using a Canon 5D iii camera in which the die is placed B-L in one picture and M-D in the other. The pictures will then be scaled to the original scale. By means of AutoCAD 14, lines will be drawn parallel to either the traced axial walls in the gingival one third of the buccal and lingual surfaces or all proximal surfaces. These lines will then be extended until they meet to form an angle above the convergence angles in the images that will be measured using the software tools.
- ItemKnowledge, Attitude and Practice of Antibiotic Prescription among Dentists in the West-Bank: A Cross Sectional Study(Al-Quds University, Deanship of Scientific Research, 2019-09-10) Hijazy, Rowan; Hasan, MarahInappropriate use of antibiotics not only drives antibiotic resistance and misuses of resources but also it increases the risk of potentially fatal reactions and exposes people to unnecessary side effects. Moreover, changes in the dental pharmacotherapeutic field have been so rapid in recent years that necessitating the constant update of dental practitioners’ knowledge about new drugs, drug interactions, and useful therapeutic trends is necessary. Thus, this study came to determine the level of antibiotic abuse among general dentists in the West Bank, and evaluate the knowledge and attitude toward the antibiotic prescription guidelines using a self-administered questionnaire. A cross sectional study was distributed to all dentists working in Palestine (West Bank). The questionnaire contains five parts; the first section explores demographics such as age, gender and place of study. The second section has two parts: the first one has nine questions about knowledge of treatment approach in different dental situations; the second part contains three questions about treatment approaches for different emergency dental Problems. The third section shows antibiotic prescription habits and perceived indication with fourteen questions. The fourth section contains seven questions included education about antibiotic and its resistance; and the last section shows dentals practice antibiotic prescriptions with twelve questions. The data resulting from this study will inform us about the level of antibiotics abuse in the West Bank dental sector. Moreover, it will help us define the level of knowledge and attitude of the dentists toward antibiotic prescription in their personal clinics and practice, forming an image of the additional needed education on the antibiotic prescription guidelines.
- ItemInfection Control Knowledge, Attitude and Behavior among Undergraduate Dental Students at Al-Quds University(Al-Quds University, Deanship of Scientific Research, 2019-09-10) Allawieh, RuwaaInfection control is one of the most crucial challenges in healthcare settings worldwide and is considered one of the most important causes of morbidity and mortality associated with clinical, diagnostic and therapeutic procedures. At the dental field, the dentists deal with an infective environment while treating patients. Hence strict cross infection protocols are usually taught at dental schools to build the correct habits in dealing with patients and instruments and minimize the risk of cross infection. Al-Quds university dental school applies those strict rules in their out patients dental clinics; however, we don’t know how much of infection control protocols are practiced among students and how much of what they learned, will be practiced in their future clinics. Thus, this study came to evaluate the cross infection knowledge, attitude and practice among undergraduate dental students at Al-Quds University. A cross sectional study based on a self-administered questionnaire consisting of seventeen questions regarding the students’ knowledge of cross infection and blood borne pathogens transmission in dental settings, six questions on attitude and thirteen questions about their practice and behavior. In addition, some demographic questions such as the gender and the academic average were asked. Questions of this survey were modeled after validated published surveys. This questionnaire was administered to 5th year dental students at the mid of their final semester in the DDS program at Al-Quds university Abu-Dis. We will generalize a descriptive study of knowledge and attitude then we’ll do some association using a correlational test to compare the frequencies of knowledge, attitude and practice with a p-value 0.05. Data will be analyzed using SPSS software. Ethical approval will be submitted to AQU Research Ethics Committee.
- ItemCompliance of dental staff with infection control practices in primary health care centers in Gaza strip(Al-Quds University, Deanship of Scientific Research, 2019-09-10) Jaser, SondosOne of the most important issues of dental care staff is to take in consideration the safety conditions during practice. This has a direct impact on the health of patients and staff in dental clinics. The aim of the current study is to assess the level of Compliance of dental staff with infection control practices in primary health care centers in Gaza strip. A survey for observing 100 dentists working in the all dental clinics of primary health care in the five governorates of Gaza trip will be conducted by well-trained personnel on using a checklist related to routine safety procedures. According to the reports and the data base of Ministry of Health, the target population of the study will be 100 dentists. The checklist will include items about infection control measures related to dentist practice, availability of equipment, instruments and materials necessary for infection control, and the infrastructure level of clinic environment suitable for infection control, also the socio-demographic information of dentists will be included in the checklist. Data will be statistically be processed by the SPSS program to describe the level of compliance of dentist by presenting in the form of frequency tables and graphs; in addition, t-tests and ANOVA at significant level (α =0.05) will be used to compare the difference in the level of compliance of infection control according to gender, age, years of experience and qualification of dentists and according to region, type and the condition of clinics. The results and recommendations of the current study may help the dental staff and the decision makers in the Ministry of health in Palestine to carry out policies, measures and interventions that help in controlling and preventing the potential transmission of occupational and nosocomial infections among dental personnel and their patients.
- ItemDistribution of Cosmetic Dental Procedures among University Students: Observational Cross Sectional Study in Gaza Strip(Al-Quds University, Deanship of Scientific Research, 2019-09-10) El Bughdady, DinaCosmetic dentistry is a branch of dentistry that deals with any dental work that improves the appearance -not necessarily the function- of a person’s teeth, gums and/or bite. There are many techniques and methods used to treat teeth that are discolored, chipped, misshapen or missing. Common procedures include bleaching, bonding, crowns, veneers, reshaping, and contouring. These improvements are not always just cosmetic. Many of these treatments can improve oral problems, such as overbites and underbites. Due to a heightened awareness of cosmetic dentistry in the society and the rapidly increasing numbers of dentistry graduates, it is important to find the best possible way to satisfy society's demands and fairly distribute dental clinics. The aim of this study is to identify the prevalence of cosmetic dental procedures among university students and their satisfaction with the cosmetic result in Gaza. The study will be carried among adult students aged from 18 to 25years old in Gazan universities (Al-Azhar University, Islamic University, Al-Aqsa University and University of Palestine). Three hundred and twenty students will be recruited randomly by stratified method according to the students' distribution in the colleges. The survey will be conducted by distributing questionnaires to the students in order to gather information about the prevalence of cosmetic dentistry and the tendency of university students to undergo cosmetic procedures. Upon receiving the results, we will be able to compare the demands of our society to the supply of cosmetic dental clinics. In this way, we can work to distribute them geographically on the basis of the major concerns of each area. By having a background of the dental awareness in our society and what they are expecting from a dental treatment, we will be able to enhance our knowledge and application to fulfill patients’ desires.
- ItemOccupational Hazards in Primary Healthcare Dental Clinics in Gaza Strip-Cross Sectional Study(Al-Quds University, Deanship of Scientific Research, 2019-09-10) Hasan, NadiaDental professionals are at risk to many occupational hazards. They are predisposed to infections such as HIV and hepatitis; dental materials can cause dermatitis because of skin exposure from the incidents noise, radiation musculoskeletal disorders, psychological problems, respiratory disorders and eye insults. Skin exposure to incidents remains an important concern, as well as exposure to serious infectious agents represents additional risk. Goal and importance of study: The purpose of this study is to assess the level of awareness and attitudes about occupational hazards among dentists in dental clinics in Primary Health Care centers of MOH and to correlate the level of awareness with the level of practicing the safety measures against the occupational hazards. Also, to discuss safety rules that protect the dentists and their clients from occupational hazards. The results of this study may highlight the importance of adopting protective interventions and updated protocols to be applied routinely in the dental clinics of Gaza strip.
- ItemInfection Control Knowledge, Attitude and Behavior among Undergraduate Dental Students at Al-Quds University(Al-Quds University, Deanship of Scientific Research, 2020-09-10) Allawieh, Ruwaa; Kateeb, ElhamInfection control is one of the most crucial challenges in healthcare settings worldwide and is considered one of the most important causes of morbidity and mortality associated with clinical, diagnostic and therapeutic procedures. At the dental field, the dentists deal with an infective environment while treating patients. Hence strict cross infection protocols are usually taught at dental schools to build the correct habits in dealing with patients and instruments and minimize the risk of cross infection. Al-Quds university dental school applies those strict rules in their out patients dental clinics; however, we don’t know how much of infection control protocols are practiced among students and how much of what they learned, will be practiced in their future clinics. Thus, this study came to evaluate the cross infection knowledge, attitude and practice among undergraduate dental students at Al-Quds University. A cross sectional study based on a self-administered questionnaire consisting of seventeen questions regarding the students’ knowledge of cross infection and blood borne pathogens transmission in dental settings, six questions on attitude and thirteen questions about their practice and behavior. In addition, some demographic questions such as the gender and the academic average were asked. Questions of this survey were modeled after validated published surveys. This questionnaire was administered to 5th year dental students at the mid of their final semester in the DDS program at Al-Quds university Abu-Dis. We will generalize a descriptive study of knowledge and attitude then we’ll do some association using a correlational test to compare the frequencies of knowledge, attitude and practice with a p-value 0.05. Data will be analyzed using SPSS software. Ethical approval will be submitted to AQU Research Ethics Committee.
- ItemMarginal and Internal Crown Fit Evaluation of CAD/CAM versus Press-Laboratory Lithium Disilicate Crown(Al-Quds University, Deanship of Scientific Research, 2020-09-10) Musleh, Ayman M.; Abu Nasser, Bassel S.; Faraj, Ahmad J.; Awwad, Ahmed; Hamad, Yousef J.; Al Hour, Fatema; Elshanti, AmjadThis study aims to evaluate the marginal gap and internal adaptation of lithium disilicate crowns fabricated by conventional press-dental laboratory and CAD/CAM systems. The size of the marginal and internal gaps of crowns is fabricated with the two techniques in the current study; the research will be performed in an effort to improve clinical outcomes. Tooth #14 was prepared per standard specification to receive the lithium disilicate crowns. Sixty Type IV gypsum dies tooth #14 were duplicated and divided into three groups (n=30). The lithium disilicate CAD/CAM system (Group 1) was fabricated with the E4D CAD/CAM system according to manufacturer's instructions. For press-dental laboratory made crowns, impressions were taken on the region area with two-step impression techniques with light and putty consistency VPS. Impressions were sent to two independent dental laboratories (Groups 2 and 3) for fabricating the monolithic press lithium disilicate crown. Tooth #14 was optically scanned and lithium disilicate blocks were used to fabricate crowns using CAD/CAM technique. Polyvinyl siloxane impressions of the prepared teeth were made and monolithic pressed lithium disilicate crowns were fabricated. The marginal gap was measured using optical microscope at 160× magnification (Keyence VHX-5000, Japan) and internal fit of the crowns was assessed by the silicone replica technique. Four sections of each replica were obtained, and each section was evaluated at four points: marginal gap (MG), axial wall (AW), axio-occlusal edge (AO) and Centro-occlusal wall (CO), using an image analyzing software. Statistical analysis was performed using ANOVA and chi-squared test. Study design: Experimental. Setting of study: University of Palestine and Laser Specialized center For Esthetic Dentistry.