Neamat Hassan Abubakr Hassan

Neamat Hassan Abubakr Hassan
University of Nevada, Las Vegas | UNLV · School of Dental Medicine

BDS, DSS, MSc, MS CRMPhD

About

85
Publications
21,651
Reads
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1,222
Citations
Introduction
Neamat Hassan Abubakr Hassan work at University of Nevada, School of Dental Medicine, biomedical sciences. She began at the faculty of Dentistry, University of Khartoum in Sudan where she quickly earned promotions to chair, and first female professor of the department of Oral Rehabilitation. She is an active contributor to educational, academic, clinical and research activities, with evidence of broad and high impact publications within the dental literature. Her approach to dental education has been to work her way up the hierarchy, learning and integrating information at each stage. She has made contacts within dental education, private practice, and dental research globally, which lead her to the commitment of academic excellence.
Additional affiliations
September 2017 - present
University of Nevada, Las Vegas
Position
  • Professor (Associate)
October 2013 - August 2017
Princess Nora bint Abdul Rahman University
Position
  • Professor (Full)
January 2006 - present
University of Khartoum
Position
  • Professor (Full)
Education
September 1997 - March 2001
Niigata University
Field of study
  • Operative dentistry & Endodontics

Publications

Publications (85)
Article
Full-text available
Background: Molar incisor hypomineralization (MIH) is the presentation of an enamel defect, where incisors and one (or more) molars are affected. Identifying MIH is significant in restoring its visual defect and avoiding pain or other consequences of this condition. The present cross-sectional study aimed to evaluate the awareness, ability, and co...
Article
Full-text available
Aims: Several factors influence the development of white spot lesions (WSLs), and one of these is fixed orthodontic appliances. This study aims to evaluate the awareness, preventive strategies, and management of WSLs among a group of Orthodontists. Materials and methods: A qualitative methodology was applied; four focus groups made up a purposiv...
Article
Aims: The aim of this study was to evaluate the cultural, psychological, and religious influences on the choice of autografts, allografts, xenografts, and synthetic bone products for the grafting procedure and with implant placement. Materials and methods: A qualitative methodology was employed, using the principles of the constant comparative m...
Article
Full-text available
Aim and objective: Peri-implantitis is a key concern for dental implants and the main common reason for implant failure. This investigation evaluated the risk factors and their implications on peri-implantitis. Materials and methods: A retrospective search of the patients' clinical notes was performed to identify the documented cases of peri-imp...
Article
Full-text available
Objective: To identify the distribution and characteristics of cracked teeth in a Southern Nevada population attending the dental clinics of the School of Dental Medicine, University of Nevada, Las Vegas (SDM, UNLV). Methods: A retrospective keyword search of the clinical notes of SDM, UNLV patient charts in AxiUm™ was performed using the search te...
Article
Introduction Reflection on competency helps students become more proficient in performing skills, with the ultimate goal of better retention of knowledge and skill. Competency progression involves a complex interplay of factors, and not having the insight of such multiple perspectives of the same experience, we will not be able to understand studen...
Article
Full-text available
Objectives An insight into students’ motivation and confidence in the choice of entering and remaining in dental education is essential. The understanding of how choices are made can help universities in the planning of admission policies. This study aimed to evaluate the career choice influences, motivation and confidence in the choices made into...
Article
Full-text available
Aim: This in vitro study aimed to evaluate the effect of implant impression coping geometrical designs on the accuracy of open and closed impression techniques and in the parallel and nonparallel implant positions. Material and methods: Three custom-made acrylic resin models of three tested implant systems (Straumann®, SIC Invent®, and Osstem®)...
Article
Full-text available
Abstract Background/purpose Anomalies in human dentition are some of the most common occurrences of congenital abnormalities. Present study aimed to determine the prevalence of hypodontia, hyperdontia and concomitant hypo-hyperdontia (CHH) among patients attending the University of Nevada, Las Vegas (UNLV) School of Dental Medicine clinics. Materi...
Preprint
Full-text available
Background An insight into students’ motivation and choice into entering and remaining in dental education is essential. The understanding of how choices are made will help universities in the planning of admission policies. The aim of this study was to evaluate the career choice and motivation into dental education by undergraduate dental students...
Article
Full-text available
Background The outcome of the evaluation of impression techniques accuracy may improve the selection criteria for an ideal technique. The aim was to evaluate the accuracy of the open and closed tray techniques for implant impressions, in a partially edentulous maxilla, replaced with a three-unit fixed partial denture, as well as to assess the effec...
Article
Full-text available
Background: An accurate impression is crucial to the long-term success of dental implants. This investigation evaluated the accuracy of the open and closed implant impression techniques in partially edentulous patients who received two adjacent implants. Material and methods: Forty patients received Osstem Implants (Osstem Implant System, Seoul,...
Poster
Objective: Peri-implantitis is emerging as a major complication with dental implants and the most common cause of implant failure.The present study attempted to identiy risk factors associated with peri-implantitis. Methods: A retrospective keyword search of the clinical notes of UNLV School of Dental Medicine (SDM) patient charts in axiUm™ was per...
Poster
Objectives: The objective of the present experimental investigation was to evaluate the effect of implant copings’ geometrical designs on the accuracy of the implant impression techniques, with parallel and non-parallel implants. Methods: Three acrylic test models with the three investigated implant systems, namely Straumann, SIC Invent and Osstem...
Poster
Objectives: A regional comparison of cracked teeth in the United States identified that populations in the Southwest ranked second highest in occurrences in the U.S. This study identified the prevalence of cracked teeth in a Southern Nevada population in order to document this feature within a regional population and provide insight regarding this...
Poster
Objectives: The purpose of the present double-blinded lab trial is to determine if dental students were satisfied to work with preheated composite resin and what was their preferable temperature. Methods: Thirty-two second-year dental students agreed to participate by restoring class I readily prepared acrylic first molars with preheated composite...
Poster
Objectives The objective of the present investigation was to determine the prevalence of hypodontia, hyperdontia, and concomitant hypo-hyperdontia among patients attending the UNLV School of Dental Medicine clinics. Methods A retrospective search was conducted using keywords in AxiUm™ such as “hypodontia,” “ hyperdontia,” “supernumerary teeth,” and...
Poster
Objectives: This in vitro study aimed to evaluate the performance of different orthodontic brackets when exposed to various dietary components. Methods: Metal and clear orthodontic brackets were bonded to 24 extracted second maxillary premolars (a set of 12 for each type of bracket). There were three dietary solutions (one soft drink, one energy dr...
Poster
Objectives: Sleep bruxism (SB) is considered a parafunctional habit and also as a sleep-related disorder. Characteristics of SB include grinding or clenching of the teeth. The purpose of the present study is to identify if there is a correlation between SB and excessive daytime sleepiness Methods: A retrospective keyword search of the clinical note...
Poster
Objective: This retrospective clinical study investigated the presence and type of non-carious cervical lesions associated with bruxism. Methods: A keyword search of the clinical notes of all UNLV School of Dental Medicine (SDM) patient charts in axiUm™ was performed using the search terms “bruxism”, “attrition”, “abrasion”, “erosion”, and “abfract...
Article
Objective To evaluate the effects of the patient–dentist relationship on dental anxiety among young adult Sudanese patients. Materials and methods In this cross‐sectional study, 864 patients attending outpatient dental clinics of the governmental dental hospitals in Khartoum, Sudan were recruited; 51.2% were males and 48.8% were females, with an a...
Article
This study aimed to evaluate the secondary outcomes of gender and arch and their impact on pain reduction following initial endodontic therapy. 185 medications, including placebo were prepared, and 170 participants completed the trial. Group 1, received a single dose of Paracetamol alone (G-1), Group 2 received combined Ibuprofen/Paracetamol (G-2)....
Article
Introduction: In this clinical trial, we evaluated and compared bond failure rates of light-cured composite resin vs chemical-cured composite resin for 12 months. Methods: Twenty-two subjects (356 stainless steel brackets) were included in this study, and a split-mouth design was used to randomly allocate diagonally opposite quadrants to either...
Article
Full-text available
Objectives: The aims of this study were to evaluate patient satisfaction with fixed prosthesis following placement and to assess the oral health and oral hygiene practices awareness by survey questionnaire. Materials and Methods: One hundred and ninety-two questionnaires were filled by patients wearing fixed prosthesis; the questionnaire included...
Article
Full-text available
The aim of the present study was to assess the dietary habits and oral hygiene practice of dental students in a new dental school. A self-administered structured closed-ended questionnaire on demographic characteristics, medical history, oral hygiene and dietary habits was distributed to dental students. Results showed that One third of students in...
Conference Paper
Purpose: The purpose of this study was to investigate the quality of final impressions and prescriptions for fixed restorations that were received by private and educational institute's laboratories.  Methods: Two hundred and seventeen questionnaires were distributed to eight private laboratories and seven dental schools. The question...
Article
Full-text available
Objective: The aim of the present investigation is to identify tooth shade among a group of Sudanese patients. Materials and Methods: Total number of patients was 227. Participant’s age ranged from 15 to 72 years, which, was divided into four groups. The tooth included in the study was either right or left sounds maxillary central incisor. Vita Eas...
Article
Full-text available
Abstract Purpose: To evaluate the quality of the composite restorations. Material and Methods: A total of 246 composite restorations in 125 patients attending the Conservative Dentistry Clinics at the Faculty of Dentistry, University of Khartoum were examined. Both anterior and posterior compos- ite restorations were included. California Dental Ass...
Article
Full-text available
Abstract Introduction The aim of the present study was to investigate and compare the fracture resistance of root canals filled with Resilon/Epiphany and those that were obturated with Gutta percha/AH plus endodontic sealers. Materials and methods A total of 60 extracted human single rooted teeth were selected; 25 teeth for each test group and...
Article
Full-text available
Purpose: To evaluate tooth preparation for full ve- neer cast restorations performed by final year dental students in Sudan. Materials and Methods: 117 stone dies from two different dental institutions were col- lected and evaluated. Polyvinylsilioxane impression material was used to produce two impressive replicas of which one was sectioned in fac...
Article
Full-text available
ABSTRACT Purpose: To evaluate tooth preparation for full veneer cast restorations performed by final year dental students in Sudan. Materials and Methods: 117 stone dies from two different dental institutions were collected and evaluated. Polyvinylsilioxane impression material was used to produce two impressive replicas of which one was sectioned i...
Article
Full-text available
This study aimed to assess self-reported chewing ability among a sample of Sudanese adults and to identify factors associated with impaired oral function. A total of 1,888 adults (≥16 years old) attending outpatient clinics in Khartoum State were included. Subjective chewing ability was assessed by interviewing participants on chewing complaints an...
Article
Full-text available
Abstract: Aim and objectives: Anxiety is a generalized mood condition that can often occur without a recognizable triggering stimulus. Anxiety and dental anxiety are common problems that interfere in the regular dental checkup or dental treatment which may lead to iatrogenic trauma which will affect the quality of healthcare. The aim of the study i...
Article
Purpose: The purpose of this study was to investigate the quality of final impressions and prescriptions for fixed restorations that were received by private and educational institute’s laboratories in Sudan. Materials and methods: Two hundred and seventeen questionnaires were distributed to eight private laboratories and seven dental schools in Su...
Article
Full-text available
Abstract: The aims of this study were to develop a Sudanese-Arabic version of the English-language Oral Health Impact Profile-14 (OHIP-14), assess the psychometric properties and performance of this new instrument, and then use it to investigate the impacts of selected oral disorders on oral health-related quality of life (OHRQoL). Sudanese adolesc...
Article
Introduction The aim of the present study was to investigate and compare the fracture resistance of root canals filled with Resilon/Epiphany and those that were obturated with Gutta percha/AH plus endodontic sealers. Materials and methods A total of 60 extracted human single rooted teeth were selected; 25 teeth for each test group and 5 for each c...
Article
Full-text available
The purpose of this study was to investigate the quality of final impressions and prescriptions for fixed restorations that were received by private and educational institute’s laboratories in Sudan. Two hundred and seventeen questionnaires were distributed to 8 private laboratories and 7 dental schools in Sudan. The questionnaires were filled by t...
Article
Full-text available
A study was conducted to determine the degree of tooth loss, factors influencing tooth loss, and the extent of prosthodontic rehabilitation in Sudanese adults (≥ 16 years old) attending outpatient clinics in Khartoum State. Pearson and multivariate analyses were used to examine the relationships between tooth loss and specific characteristics deter...
Article
Full-text available
Abstract: A study was conducted to determine the degree of tooth loss, factors influencing tooth loss, and the extent of prosthodontic rehabilitation in Sudanese adults (≥ 16 years old) attending outpatient clinics in Khartoum State. Pearson and multivariate analyses were used to examine the relationships between tooth loss and specific characteris...
Article
ABSTRACT Background: The technical quality of root fillings performed by undergraduate students indicated unsatisfactory results. Aim: The aim of the present study was to investigate the difficulties and amount of time encountered by final year dental students during performing conventional root canal treatment for a molar tooth. Methods: A questio...
Article
Full-text available
The aim of the present study was to investigate and compare the apical sealing ability of Resilon/Epiphany-filled root canals with those that were obturated with gutta-percha/AH-Plus endodontic sealer. A total of 60 extracted human single-rooted teeth were selected; 25 teeth for each test group and five for each control group. After conducting conv...
Article
Full-text available
The aims of the present study were to determine the prevalence of dental abfraction among a sample of adult Sudanese patients and to investigate the possible association between abfraction and different etiological factors. The diagnosis of abfraction included both clinical examination and laboratory work. All attended patients were examined for...
Data
Distribution of participants' characteristics, their association with and likelihood of having decay, ≥ 18 SUNT, tooth wear, and periodontal pockets ≥ 4 mm.
Article
Full-text available
INTRODUCTION: The purpose of this in vitro study was to evaluate the sealing ability of the readymade temporary filling and hand mixed materials by assessing coronal microleakage. MATERIALS & METHODS: Standardized access cavities were prepared in 80 intact human permanent premolar teeth. They were divided randomly into four experimental groups (n=...
Article
The aim of the present study was to evaluate the quality of root canal treatment performed by undergraduate dental students at the University of Khartoum. Assessment was by examination of periapical radiographs of completed endodontically treated teeth, performed by undergraduate dental students. A total of 166 postoperative periapical radiographs...
Article
Full-text available
Abstract The purpose of the present cross-sectional pilot study was to evaluate the influence of the quality of root canal fillings and coronal restorations on the periradicular status of these teeth. Seventy adult patients attended the Conservative dentistry clinic (Faculty of Dentistry, University of Khartoum), seeking routine dental care (not em...
Article
Full-text available
Introduction: The aim of the present study was to compare hand stainless steel K-files and Nickel-Titanium Profile 0.04 taper 29 series rotary instruments for their efficiency, procedural errors and time consumed in preparation of root canal system. Materials and methods: A total of 46 maxillary and mandibular first premolars extracted for ortho...
Article
Full-text available
The aim of the present study is to investigate the quality of crown and bridge work among dentists in Khartoum state by mean of a questionnaire. Questionnaire was distributed to all dentists (about 230) who work in private clinics and primary health centers in Khartoum state. A total of 152 usable questionnaires were collected, giving a response ra...
Article
Full-text available
Abstract Introduction: The aim of the present study was to compare hand stainless steel K-files and Nickel-titanium Profile 0.04 taper 29 series rotary instruments for their efficiency, procedural errors and time consumed in preparation of root canal system. Materials and Methods: A total of 46 maxillary and mandibular first premolars extracted for...
Article
The purpose of this study was to examine whether Streptococcus mutans is implicated in the generation of fluorescence detected in carious lesions. Enamel surfaces and dentin cavities of extracted human teeth were subjected to artificial caries generation by exposing them either to a culture medium containing S. mutans or to a lactic acid buffer for...
Article
Abstract The purpose of this study was to examine whether Streptococcus mutans is implicated in the generation of fl uorescence detected in carious lesions. Enamel surfaces and dentin cavities of extracted human teeth were subjected to artifi cial caries generation by exposing them either to a culture medium containing S. mutans or to a lactic acid...
Article
Purpose: The purpose of this study was to evaluate the amount of fluoride released from compomer restorative materials after immersion in various media. Materials and methods: In this test, four materials were used: three compomers (Dyract, Dentsply, Konstanz, Germany; Compoglass, Vivadent, Schaan, Principality of Liechtenstein; and Xeno, Sankin...
Article
Full-text available
Recently, the influences of oral microbes on various systemic diseases have been clarified, suggesting the importance of oral care. In our previous pilot study, we proposed a classification of oral care needs and the oral care system for various categories of the elderly. In addition, the effect of the system was microbiologically evaluated when te...
Article
The purpose of this study was to evaluate microstructure of adhesive interface after removal caries by Er: YAG laser. Observation of the micromorophology of adhesive interface was performed by Laser Scanning Microscope (LSM), Scanning Electron Microscope (SEM) and WDX type of electron probe X-ray microanalyzer (EPMA). The results were as follows...
Article
Full-text available
The purpose of this study was to evaluate the usefulness of autofluorescence of carious lesions on caries diagnosis. The observation of the micromorophology of caries lesions was conducted using a confocal laser scanning microscope, a fluorescence microscope and a WDX type electron probe X-ray microanalyzer. Observation of autofluorescence under Cy...
Article
This study evaluated fluoride-release and recharging with the fluoride mouth rinsing technique on fluoridated materials. Three fluoride containing materials and one non-fluoride containing composite resin were used for this study. Samples for each material consisted of 15 discs, 9 mm diameter with a thickness of 1 mm. Initial fluoride release was a...
Article
Full-text available
The purpose of this study was to evaluate marginal leakage of composite resin restoration from cavities prepared by Er:YAG laser. The observation of the dentin surface after the application of laser irradiation was performed by LSM, the cutting surface showed a rough surface similar to scales, and exposed dentinal tubules were observed without stri...
Article
Full-text available
The purpose of this study was to observe and measure the morphological changes that occur in the hard tissue after the application of Er:YAG laser. Another objective was to evaluate and compare the duration of application of both the laser apparatus and a conventional cutting device. In this study, sound and newly extracted carious tissues were use...
Article
The purpose of this study was to evaluate the effect of alcoholic and low pH soft drinks on the surface roughness of compomer restorative materials. There were five tested materials and four immersion media. Specimens were immersed in test solutions for a 10-day period at a temperature of 37 degrees C. Measurement of the surface texture was carried...
Article
Full-text available
The objectives of this study, were to evaluate the fluoride release from fluoridate adhesive resin cement, fluoride uptake into surrounding tooth structures and the effect of their acid resistance. Several specimens were prepared using a plastic ring mould, from extracted human premolars, and prepared from enamel and dentin of the central area of t...
Article
Limited information is available about the mechanical behavior of compomer under intraoral conditions. This in vitro study evaluated changes in the mechanical properties and surface texture of compomer and other materials, used in similar clinical circumstances, when immersed in various media. Hardness measurement for 5 tested materials and 4 immer...
Article
The purpose of the present study was to determine the resin-dentin Interface conditions in Wet vs. Dry Dentin. Dentin disks were prepared from extracted human premolars. Sectioned dentin surfaces were used for SEM studies of wet vs. dried acid-etched dentin. These specimens were cut perpendicular to the surface into two equal halves. One-half of th...