Dentistry Commons^™

Imaging Of The Jaws, Lisa J. Koenig

School of Dentistry Faculty Research and Publications

No abstract provided.

Experiences With The Streptococcus Mutans In Lakota Sioux (Smiles) Study: Risk Factors For Caries In American Indian Children 0-3 Years, David R. Drake, Deborah Dawson, Katherine Kramer, Amy Schumacher, John Warren, Teresa Marshall, Delores Starr, Kathy Phipps

Journal of Health Disparities Research and Practice

Severe Early Childhood Caries (S-ECC) is a terribly aggressive and devastating disease that is all too common in lower socio-economic children, but none more so that what is encountered in American Indian Tribes. Nationwide, approximately 27% of 2-5 year olds have decay while 62% percent of American Indian/Alaska Native children in the same age group have a history of decay (IHS 2010, NHANES 1999-2002). We have conducted a study of children from birth to 36 months of age on Pine Reservation to gain a better understanding of the variables that come into play in the development of this disease, from …

Effect Of Dexamethasone Prodrug On Inflamed Temporomandibular Joints In Juvenile Rats., Mitchell Knudsen, Matthew Bury, Callie Holwegner, Adam L. Reinhardt, Fang Yuan, Yijia Zhang, Peter J. Giannini, David B. Marx, Dong Wang, Richard A. Reinhardt

Journal Articles: College of Dentistry

INTRODUCTION: Juvenile idiopathic arthritis (JIA) often causes inflammation of the temporomandibular joint (TMJ) and has been treated with both systemic and intra-articular steroids, with concerns about effects on growing bones. In this study, we evaluated the impact of a macromolecular prodrug of dexamethasone (P-DEX) with inflammation-targeting potential applied systemically or directly to the TMJ.

METHODS: Joint inflammation was initiated by injecting two doses of complete Freund's adjuvant (CFA) at 1-month intervals into the right TMJs of 24 growing Sprague-Dawley male rats (controls on left side). Four additional rats were not manipulated. With the second CFA injection, animals received (1) 5 …

Differential Gene Expression Profiles Reflecting Macrophage Polarization In Aging And Periodontitis Gingival Tissues, Octavio A. Gonzalez, Michael John Novak, Sreenatha S. Kirakodu, Arnold J. Stromberg, R. Nagarajan, Chifu B. Huang, K. C. Chen, Luis Orraca, J. Martinez-Gonzalez, Jeffrey L. Ebersole

Center for Oral Health Research Faculty Publications

Recent evidence has determined a phenotypic and functional heterogeneity for macrophage populations. This plasticity of macrophage function has been related to specific properties of subsets (M1 and M2) of these cells in inflammation, adaptive immune responses and resolution of tissue destructive processes. This investigation hypothesized that targeted alterations in the distribution of macrophage phenotypes in aged individuals, and with periodontitis would be skewed towards M1 inflammatory macrophages in gingival tissues. The study used a non-human primate model to evaluate gene expression profiles as footprints of macrophage variation in healthy and periodontitis gingival tissues from animals 3-23 years of age and …

Utilizing Dental Hygienists To Improve Health Outcomes In Long-Term Care, Diana V. Macri

Publications and Research

Poor oral health practices contribute to negative health outcomes for residents of long-term care facilities. The abundance of current information on the oral–systemic connection underscores the need for improved oral hygiene among all citizens but specifically for older adults, who face challenges for self-care due to sensory, mobility, endurance and cognitive deficits. Dental hygienists are oral disease prevention specialists and are trained to perform dental procedures that significantly improve a person’s oral health. Dental hygienists are legally permitted to provide many oral healthcare services to residents of long-term care facilities independent of dentist supervision or in collaborative agreements with dentists. …

Ada News - 09/21/2015, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Analgesic Effect Of Cathodal Transcranial Current Stimulation Over Right Dorsolateral Prefrontal Cortex In Subjects With Muscular Temporomandibular Disorders: Study Protocol For A Randomized Controlled Trial, Rivail Almeida Brandão Filho, Abrahão Fontes Baptista, Renata De Assis Fonseca Santos Brandão, Francisco Monteiro Meneses, Jeffrey P. Okeson, Eduardo Pondé De Sena

Oral Health Science Faculty Publications

BACKGROUND: Temporomandibular disorders are a group of orofacial pain conditions that are commonly identified in the general population. Like many other chronic pain conditions, they can be associated with anxiety/depression, which can be related to changes in the activity of the dorsolateral prefrontal cortex. Some studies have demonstrated clinical improvement in subjects with chronic pain who are given therapeutic neuromodulation. Transcranial direct current stimulation is a noninvasive brain stimulation technique that allows the modulation of neuronal membranes. This therapy can enhance or inhibit action potential generation in cortical neurons. In some instances, medications acting in the central nervous system may …

Sem Assessment Of The Enamel Surface After Debonding Of Ceramic Brackets, Anuja Kothari

Student Theses, Dissertations and Capstones

Objective: This study was conducted to compare the shear bond strengths, patterns of bond failure and enamel surfaces after debonding two ceramic brackets (ClearVu and Radiance Plus) and one standard metal bracket (Mini Uni-Twin). Background: Ceramic brackets are an esthetic alternative to metal brackets. The mean shear bond strength of ceramic brackets is significantly greater than for metal brackets. Excessive bond strength can result in pain upon debonding, damage to the bracket or permanent damage to the enamel including flaking, cracks or tooth fracture. Numerous studies have evaluated techniques to reduce the risk of enamel damage when debonding ceramic brackets, …

Ada News - 09/07/2015, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

A Comparison Of The Push-Out Bond Strength Between Dual Polymerized Core Build-Up Composite And Total-Etch Resin Luting Cement For Prefabricated Fiber Post, Maytinee Vivathanasittiphong, Napapa Aimjirakul, Teerachai Limlawan

Chulalongkorn University Dental Journal

Objectives: Compare the push-out bond strength of a dual-cured core build-up resin composite and dual-cured resin cement using total-etch adhesive for bonding fiber post to root canal dentin. Materials and Methods: Sixty extracted single-rooted human premolars were sectioned transversely in mesiodistal direction 2 mm coronal to cementoenamel junction, standard endodontically treated, post space prepared and randomly divided into two groups (n=30). Group 1 fiber posts were luted with a total-etch resin cement (Variolink® II) and group 2 were luted with a composite resin core build-up material (Luxacore® Z-Dual) using total-etch adhesive system. All roots were cut transversely into 3 sections …

ผลของสารคอนดิชันเนอร์ทีมีต่อความแข็งแรงพันธะเฉือนระยะแรกของเรซินมอดิฟายด์กลาสไอโอโนเมอร์ต่อเคลือบฟัน, ณัฐพร เลาห์ทวีรุ่งเรือง, ไพบูลย์ เตชะเลิศไพศาล

Chulalongkorn University Dental Journal

วัตถุประสงค์ เพื่อศึกษาผลของการปรับสภาพผิวฟันด้วยสารคอนดิชันเนอร์ต่าง ๆ ต่อความแข็งแรงพันธะเฉือนในช่วงแรกของเรซินมอดิฟายด์กลาสไอโอโนเมอร์ต่อเคลือบฟัน วัสดุและวิธีการ แบ่งฟันกรามน้อย 55 ปี ออกเป็น 5 กลุ่ม โดยกลุ่ม 1-4 (กลุ่มทดลอง) ยึดติดแบร็กเกตด้วย สารยึดติดเรซินมอดิฟายด์กลาสไอโอโนเมอร์ (Fuji Ortho LC) โดยสารคอนดิชันเนอร์แต่ละกลุ่มดังนี้ กลุ่ม 1 ไม่ ใช้สารคอนดิชันเนอร์ กลุ่ม 2 กรดพอลิอะคริลิกเข้มข้นร้อยละ 20 กลุ่ม 3 กรดฟอสฟอริกเข้มข้นร้อยละ 37 กลุ่ม 4 สารเซลฟ์เอชชิงไพร์มเมอร์ (Transbond Plus SEP) กลุ่ม 5 (กลุ่มควบคุม) กรดฟอสฟอริกและสารยึดติดเรซิน คอมโพสิต (Transbonds XT) นําตัวอย่างกลุ่มละ 10 ชิ้นไปวัดความแข็งแรงพันธะเฉือนภายหลังการฉายแสง 5 นาที โดยเครื่องทดสอบสากล บันทึกค่าความแข็งแรงพันธะเฉือนที่ทําให้แบร์กเกตหลุดออกจากผิวฟัน คํานวณหา ค่าเฉลี่ยและส่วนเบี่ยงเบนมาตรฐาน ทําการเปรียบเทียบระหว่างกลุ่มด้วยค่าสถิติการวิเคราะห์ความแปรปรวนแบบ ทางเดียว วัดค่าการเหลืออยู่ของสารยึดติดบนตัวฟันด้วยค่าดัชนีการเหลืออยู่ของสารยึดติด ทดสอบด้วยค่าสถิติ ไคสแควร์ ที่ระดับความเชื่อมั่นร้อยละ 95 ส่วนตัวอย่างอีกกลุ่มละ 1 ชิ้นนําไปศึกษาการยึดติดระหว่างสารยึดติด และเคลือบฟันด้วยกล้องจุลทรรศน์อิเล็กตรอนแบบส่องกราด ผลการศึกษาค่าเฉลี่ยและส่วนเบี่ยงเบนมาตรฐานของความแข็งแรงพันธะเฉือนของกลุ่ม 1 2 3 4 และ 5 เท่ากับ 8.4 12.0 10.8 + 0.7 14.6 + 3.0 13.7 + 1.7 และ 21.5 + 4.0 เมกะปาสคาล ตามลําดับ ไม่พบความแตกต่างอย่างมี นัยสําคัญของค่าเฉลี่ยความแข็งแรงพันธะเฉือนระหว่างกลุ่มที่ 3 และ 4 (p = 0.433) ค่าดัชนีการเหลืออยู่ของสารยึด ติดสัมพันธ์กับชนิดของสารคอนดิชันเนอร์ …

Challenges In Complete Denture Fabrication: Opinions And Experiences Of Postgraduate Students, Kultida Raksinkant, Napa Sukjai Suansuwan, Waranuch Pitiphat

Chulalongkorn University Dental Journal

Objectives Limited information is available on prosthodontic postgraduate studentsû views regarding complete denture education. This study aimed to investigate the opinions and experiences of Thai prosthodontic postgraduate students toward complete denture laboratory practice. Materials and methods A self-administered questionnaire was mailed to all dentists who currently enrolled in prosthodontic postgraduate programs in Thailand during the academic year 2012. The questionnaire consisted of close-and open-ended questions on opinions and experiences related to laboratory work in complete denture fabrication. Results The response rate was 95 percent. Majority indicated that, among all laboratory procedures, posterior teeth arrangement was the most difficult (82%), most …

Fluid Emerging From Etched And Unetched Dentin Surface Under Carious Lesions In Primary Mandibular Second Molars, Monsiri Nardkosa, Varisara Sirimaharaj, Sitthichai Wanachantararak

Chulalongkorn University Dental Journal

Background: Only a limited number of reports existed about fluid flow through dentin in primary teeth, none of them were studied in carious dentin in vivo. Objectives: To study the dentinal fluid flow on both etched and unetched dentin surfaces beneath carious lesions of vital primary mandibular and second molars by using impression and replica technique. Materials and Methods: Thirty primary lower second molars were included in this study. They were divided into 3 groups according to the depth of the carious lesions. The teeth were anesthetized with 3% plain mepivacaine. Caries was removed with standard procedure. A silicone impression …

Single Nucleotide Polymorphisms Associated With Angleûs Class I And Iii Occlusal Relationship In Thais With Thyrotoxic Hypokalemic Periodic Paralysis, Jaijam Suwanwela, Virunpat Nitipong, Naruborn Ongprakobkul

Chulalongkorn University Dental Journal

Objective To identify single nucleotide polymorphisms (SNPs) that associated with different occlusal relationship in a group of Thai population. Materials and Methods One hundred and sixty unrelated Thai subjects†who participated†in Ramathibodi GWAS study for thyrotoxic hypokalemic periodic paralysis (TTPP) (Jongjaroenprasert, 2012) were selected. The subjects that were 20 years old and above with at least a pair of untilted permanent first molars or canines were selected from these subjects. Seventeen subjects met these criteria in our study.† Angleûs/canine classification of subjects were observed† both intraorally and from diagnostic models. Eight hundred and sixty four† human active SNPs from 28 related …

ประสิทธิภาพของอาหารเลี้ยงเชื้อ ไมติส ซาลิวาเรียส แบซิทราซิน อะการ์ ที่จัดเก็บไว้นาน 4 สัปดาห์ในการแยกเชื้อ มิวแทนส์ สเตร็ปโตคอคไค ในน้ำลายมนุษย์, บรรเจิด ยะพงศ์, ศิษฎา ตันนุกิจ, สุวรรณา จิตภักดีบดินทร์

Chulalongkorn University Dental Journal

วัตถุประสงค์ เพื่อเปรียบเทียบประสิทธิภาพของอาหารเลี้ยงเชื้อไมติส ซาลิวาเรียส แบซิทราชิน อะการ์ ที่เตรียม เก็บไว้นาน 1, 3 และ 4 สัปดาห์ วัสดุและวิธีการ เก็บน้ําลายโดยใช้พาราฟินเป็นตัวกระตุ้นจากอาสาสมัคร 20 คน แล้วนําไปเพาะเลี้ยงเชื้อบน อาหารเลี้ยงเชื้อไมติส ซาลิวาเรียส อะการ์ และ ไม่ติส ซาลิวาเรียส แบซิทราซิน อะการ์ ที่เตรียมเก็บไว้นาน 1, 3 และ 4 สัปดาห์ โดยวิธีสเปรดเพลท ผลการศึกษา จํานวนมิวแทนส์ สเตร็ปโตคอคไค ที่เจริญบนอาหารเลี้ยงเชื้อไมติส ซาลิวาเรียส แบซิทราซิน อะการ์ เก็บที่อุณหภูมิ 4 องศาเซลเซียสเป็นระยะเวลา 1, 3 และ 4 สัปดาห์ มีจํานวนเชื้อและลักษณะโคโลนีไม่แตกต่างกัน และไม่พบการเจริญของเชื้อสปีชีส์อื่น เชื้อที่เลี้ยงบนอาหารเลี้ยงเชื้อที่ไม่มีแบซิทราซินมีจํานวนสูงกว่าอาหารเลี้ยง เชื้อที่มีแบซิทราซินอย่างมีนัยสําคัญทางสถิติ (p<0.05) สรุป อาหารเลี้ยงเชื้อไมติส ซาลิวาเรียส แบซิทราซิน อะการ์ สามารถเก็บที่อุณหภูมิ 4 องศาเซลเซียสได้นานถึง 4 สัปดาห์ โดยไม่สูญเสียคุณสมบัติของการเป็นอาหารเลี้ยงเชื้อจําเพาะสําหรับเชื้อกลุ่มมิวแทนส์ สเตร็ปโตคอคไค (ว ทันต จุฬาฯ 2558;38:177-184)

Challenging The Efficacy Of Different Dental Bleaching Protocols, A. Koniaris, Vasileios Margaritis

Walden Faculty and Staff Publications

No abstract provided.

Color-To-Grayscale Conversion Using A Smart Phone Camera For Value Comparison, Seok-Hwan Cho

School of Dentistry Faculty Research and Publications

No abstract provided.

Using A Thermoplastic Sheet To Add Palatal Rugae To A Complete Removable Dental Prosthesis, Seok-Hwan Cho, William W. Nagy

School of Dentistry Faculty Research and Publications

No abstract provided.

Development Of Optical Biosensor Technologies For Cardiac Troponin Recognition, Mojgan Abdolrahim, Mohammad Rabiee, Sanaz Naghavi Alhosseini, Mohammadreza Tahriri, Sara Yazdanpanah, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Acute myocardial infarction (AMI) is the leading cause of death among cardiovascular diseases. Among the numerous attempts to develop coronary marker concepts into clinical strategies, cardiac troponin is known as a specific marker for coronary events. The cardiac troponin concentration level in blood has been shown to rise rapidly for 4–10 days after onset of AMI, making it an attractive approach for a long diagnosis window for detection. The extremely low clinical sensing range of cardiac troponin levels consequently makes the methods of detection highly sensitive. In this review, by taking into consideration optical methods applied for cardiac troponin detection, …

Platform Switching Of Implants May Decrease Bone Loss, Gary L. Stafford

School of Dentistry Faculty Research and Publications

Data sources: PubMed/Medline, Web of Science and the Cochrane Oral Health Group Trials Register, clinicaltrials.gov, www.centerwatch.com/clinical-trials, www.clinicalconnection.com supplemented by a manual search of dental implants-related journals.

Study selection: Clinical studies, either randomised or not, comparing implant failure rates, marginal bone level (MBL) and/or postoperative infection in any group of patients receiving platform-switched implants or platform-matched implants were considered.

Data extraction and synthesis: Study quality was assessed using the Newcastle-Ottawa scale (NOS).Only randomised clinical trials (RCTs) were considered for meta-analysis. Implant failure and postoperative infection were the dichotomous outcomes measures evaluated. Weighted mean differences were used for MBL.

Results: Twenty-eight studies …

Are Bone Turnover Markers And Vitamin D Levels Associated With Frequency Of Complete Denture Relines?, Shweta Puri

Loma Linda University Electronic Theses, Dissertations & Projects

PURPOSE: To compare groups of subjects with varying frequencies of complete denture relines in terms of their bone turnover markers; C-terminal Telopeptide (C-Tx), Osteocalcin (OCN) and Vitamin D (25 OH-Vit D) levels to determine the presence of and the degree of association between them.

METHODS: This study was designed as a cross-sectional study wherein a retrospective chart review of three hundred twenty four edentulous subjects with history of complete denture use for at least a year was performed to determine history and frequency of their complete denture relines. A total of 100 patients were enrolled. After consent was obtained, each …

Tooth Size Ratio In Orthodontic Patients With Varied Sagittal Skeletal Patterns; A Cbct Study, James Barra

Loma Linda University Electronic Theses, Dissertations & Projects

Objective: Maxillomandibular tooth size ratio (TSR) is an important aspect in achieving a satisfactory orthodontic outcome. The purpose of this study is to compare TSR among orthodontically treated patients with different skeletal anteroposterior (AP) patterns. Methods and Materials: The post-treatment (T2) cone beam computed tomograms (CBCTs) of patients treated orthodontically without extraction and finished with canine and molar class I occlusion were evaluated. The subjects were categorized into class I, class II and class III skeletal pattern by analyzing A point-Nasion-B point (ANB) at T2. Overbite (OB), overjet (OJ), TSR for canine to canine (TSR3-3) and molar to molar (TSR6-6), …

The Effect Of Scan Settings On The Identification Of Tooth Socket Lamina Dura Surface: A Cbct Study, Erick Carlucci

Loma Linda University Electronic Theses, Dissertations & Projects

Aim: Cone-beam computed tomography (CBCT) is becoming a common adjunct in orthodontic diagnosis and treatment, however several questions remain about the impact of surrounding anatomical structures and varying scan settings on the ability to delineate buccal bone and overall diagnostic quality of images produced. The aim of this study was to determine if adjacent structures with similar radiodensity and variable scan settings (field of view and voxel size) significantly impact the ability to accurately identify the tooth socket facial lamina dura, facial bone surface, facial bone margin, as well as the facial bone thickness measurement. Materials & Methods: CBCT scans …

Tooth Length Measurements On 3t Mr Images: A Retrospective Study, Kevin G. Murray

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: The purpose of this study was to determine if MRI can be used to accurately measure tooth lengths. Methods: MRI tooth length measurements were compared with “actual tooth lengths” as measured on CBCT scans. Twenty three subjects received two scans (one CBCT and one MRI). Tooth length was measured and compared between the resultant images. Intraclass correlations were used for statistical analysis. Results: Tooth length measurements made on MRI scans showed moderate to almost perfect agreement with tooth length measurements made on CBCT scans. Higher levels of agreement were present in the maxillary arch compared to the mandibular arch. …

Effect Of Diamond Bur And Root Canal Irrigants On Retention Of Fiber Posts, Rami Jekki

Loma Linda University Electronic Theses, Dissertations & Projects

Esthetic glass fiber-reinforced posts are being used more often. The most commonly reported complication associated with these posts is debonding. Dentine conditioning with solutions such as EDTA or MTAD results in removal of smear layer and might improve the retention of posts to root canal dentin. Therefore, the purpose of this study was to investigate the effect of cleansing the post space with MTAD or EDTA on the bond strength of glass fiber-reinforced posts, when a diamond roughening instrument is used prior to cementation with self-adhesive resin cement. Forty-five (n=15) extracted human premolar teeth were sectioned at the cemento-enamel junction …

Treatment Outcomes Of Patients With Unilateral Class Ii Malocclusions: A Cbct Study, Brent Leggett

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: The purposes of this study were to determine the prevalence of Class II (Cl II) subdivision patients, to quantify the change in TMJ complex, and mandibular length after treatment was accomplished. Materials and Methods: Records of consecutive patients who sought orthodontic treatment at Loma Linda University (LLU) were screened. Only patients with dental Cl II subdivision that had completed treatment with pre- (T1) and post-treatment (T2) cone beam computed tomograms (CBCTs) available were evaluated for changes in the TMJ complex position related to Foramen Rotundum (TMJ-FR), joint spaces and mandibular length (condylion to genial tubercles). Comparisons were made between …

Morphological Changes In Alveolar Bone Following Orthodontic Space Closure, Ninette Hacopian

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Changes occurring in anterior alveolar bone following orthodontic tooth movement are controversial. Some research has shown that orthodontic tooth movement results in the adaptation of cortical bone; others have shown that it results in dehiscence and fenestrations.

Purpose: The purpose of this study was to evaluate the alveolar bone changes around maxillary anterior teeth following orthodontic space closure.

Materials and Methods: Cone beam computed tomograms (CBCTs) of non-growing patients who received orthodontic treatment with bilateral maxillary premolar extraction were evaluated. Only patients with at least 5 degrees of changes in maxillary incisor (U1) to palatal plane angle were included …

Comparison Of Maxillary Anterior Teeth Width To Facial Dimensions Among Three Races, Ewa Parciak

Loma Linda University Electronic Theses, Dissertations & Projects

Dental esthetics and tooth proportions have become increasingly relevant in dentistry, as the cosmetic demands of patients increase. Determining the appropriate esthetic dimensions of the maxillary anterior teeth is an important aspect in fixed and removable prosthodontics. The proportion of facial structures and the relationship between facial measurements and natural teeth could provide additional guidance in selecting denture teeth as well as in determining ideal teeth size for fixed restorations. There have been many publications on this topic, however, the subjects in these studies have been mostly selected from the Caucasian race. With the increasing diversity of the American population …

Intraosseous Sebaceous Adenocarcinoma Of The Maxilla, Deepthi Hoskoppal, Sohail Qayyum, Kenneth M. Anderson, Yeshwant B. Rawal

School of Dentistry Faculty Research and Publications

Primary intraosseous salivary malignancies are rare. The adenoid cystic adenocarcinoma, adenocarcinoma not otherwise specified, acinic cell adenocarcinoma and the epithelial-myoepithelial carcinoma have all been reported within the jaws. The mucoepidermoid carcinoma is by far the most common tumor in this setting accounting for 2%-4% of all mucoepidermoid carcinomas. An intraosseous sebaceous adenocarcinoma has never been reported. We document a case of sebaceous adenocarcinoma of the maxilla in a 56-year-old woman who presented with a painful swelling of the right face. CT scans showed an expansile, osteolytic tumor of the right maxilla. An exploratory biopsy revealed the tumor to be expanding …

Fracture Resistance Of Compromised Endodontically Treated Teeth Restored With Bonded Post And Cores: An In Vitro Study, Georgios Maroulakos, William W. Nagy, Elias D. Kontogiorgos

School of Dentistry Faculty Research and Publications

Statement of problem: It is unclear which post and core system performs best when bonded to severely compromised endodontically treated teeth.

Purpose: The purpose of this study was to investigate the fracture resistance and mode of failure of severely compromised teeth restored with 3 different adhesively bonded post and core systems.

Material and methods: Thirty extracted endodontically treated maxillary anterior teeth were randomly divided into 3 groups, CPC, gold cast post and core; TPC, titanium prefabricated post/composite resin core; and FPC, quartz fiber reinforced post/composite resin core. All posts were adhesively cemented. All cores resembled a central incisor preparation with …