Sorin T Teich

Medical University of South Carolina | MUSC · Department of Oral Rehabilitation

Background: The Commission on Dental Accreditation (CODA) was established in 1975 with the goal of serving the public and the dental profession by developing and implementing standards that guide and maintain the quality of dental educational programs. These standards are defined broadly around competencies reflective of an evidence-based definiti...

Statement of problem Postpolymerization methods influence the properties of 3-dimensionally (3D) printed materials. Nevertheless, it is a time-consuming step that could lead dentists to avoid the chairside use of 3D printing. Information assessing the impact of different postpolymerization workflows on flexural strength and color stability is spars...

Periodontal disease has been associated with various systemic diseases including kidney disease. However, a causal relationship is yet to be established. One possible association is that periodontitis may cause an increased inflammatory response in kidney disease patients which in turn destroys endothelial vasculature. This may contribute to develo...

Objective The purpose of this study was to test a novel through-the-guide means of irrigation in an in-vitro bovine bone model and to explore the method clinical applicability. Materials and Methods Surgical guides were designed to fit over five fresh bovine samples. Control osteotomy sites were compared to experimental sites irrigated through a 3...

Objective: This study aimed to compare the accuracy performance of five different intraoral scanning systems for a full-arch scan on an edentulous cadaver maxilla. Method and materials: Five digital intraoral impression systems were used to scan a fully edentulous cadaver maxilla. A master scan obtained with an ATOS Capsule industrial grade scan...

Objectives: The goal of the study was to determine the effects of software updates on the trueness and precision of digital impressions obtained with a variety of intraoral scanner (IOS) systems. Method and materials: Seven IOS systems were investigated. Each system was tested using two versions of software, with the second version being the lat...

Objectives The current study aims to investigate the aerosol and spatter mitigation quality of 13 dry‐field isolation methods in a simulated setup that replicates real‐life work scenarios encountered in dental practices. Methods A crown preparation on a manikin was performed on tooth number 30 and repeated five times for each setup to simulate a p...

The proposed denture replication method shows a predictable workflow for fabricating complete dentures for patients with existing dentures. The replication technique is a method of fabricating new removable complete dentures utilizing the existing prosthesis as the foundation for a new denture. The technique has some advantages such as allowing the...

Objective: The novel coronavirus that was first identified in Wuhan, China, in December 2019, created a pandemic that has the potential to change the paradigm of health care delivery. Of interest to the dental community is the presence of SARS-CoV-2 in the saliva of the affected patients that can potentially cause transmission of COVID-19 via dropl...

Statement of problem: A reliable and validated protocol for nondestructive analysis of the entire restorative interface that could be applicable in studies assessing the adaptation of direct and indirect restorations is lacking. Purpose: The purpose of this in vitro study was to validate a 3D protocol for microleakage assessment in class II mesi...

Objectives To evaluate the potential added benefit of the topical application of hyaluronic acid (HA) on the clinical outcomes following non-surgical or surgical periodontal therapy. Materials and methods A systematic search was performed in Medline, Embase, Cochrane, Web of Science, Scopus and Grey literature databases. The literature search was...

Statement of problem: Resin-coating agents can be used to fill microstructural defects within composite resin restorations, which might result in a smoother surface. Nevertheless, data about the color stability and surface roughness of coated restorations are lacking. Purpose: The purpose of this in vitro study was to compare the surface roughne...

Objective: The objective was to evaluate the effects of the configuration of endodontic cavities with parallel or divergent walls, versus traditional endodontic cavities, on stress distribution , fracture resistance, and fracture mode of maxillary premo-lars by using both fracture-strength and finite element tests. Method and materials: Thirty-two...

The aim of this study is to evaluate the machinability of four CAD/CAM materials (n = 13) assessed by brittleness index, Vickers hardness, and fracture toughness and interaction among such mechanical properties. The materials selected in this in vitro study are Feldspathic ceramic [FC], Lithium-disilicate glass ceramic [LD], leucite-reinforced glas...

Computer-aided design/computer-aided manufacturing (CAD/CAM) materials were submitted to thermocycling, to identify changes in mechanical behavior. Four CAD/CAM materials were divided in four subordinate groups (n=9): (1) dry out for 7 days, (2) distilled water at 37oC for 7 days, (3) 60,000 thermocycles, and (4) 120,000 thermocycles. Following the...

Objective: The objective was to evaluate the effects of the configuration of endodontic cavities with parallel or divergent walls, versus traditional endodontic cavities, on stress distribution, fracture resistance, and fracture mode of maxillary premolars by using both fracture-strength and finite element tests. Method and materials: Thirty-two...

Statement of problem: Identifying factors that affect the clinical outcomes of implant therapy is important. Purpose: The purpose of this retrospective study was to determine whether implant location was a factor affecting the complication and failure rates of single-tooth implant-supported restorations in a predoctoral setting. Material and me...

Objective: This study evaluated the wear of computer-aided design/computer-assisted manufacture (CAD/CAM) burs and the morphologic changes after a number of millings. Method and materials: Diamond burs (cylinder and step-bur) were divided into four milling groups: zero millings (G0); 15 millings (G1); 25 millings (G2); and 35 millings (G3). Seve...

Purpose: To compare the fracture toughness of four different CAD/CAM materials, (VM) Vitablocs Mark II, (IP) IPS e.max CAD, (LU) LAVA Ultimate, and (VE) Vita Enamic under long thermocycling conditions. Methods: Each type of ceramic block was sectioned into beams (n=9) with dimensions of 14×3×2.5 mm (L × W × H). All four ceramics were submitted t...

The development of dental materials during the last few years is related to many factors, such as patient aesthetics requirements and also the increase in usage of CAD/CAM technology. The literature review shows the most used classes of indirect restorative materials and it demonstrates how the evolution of metal-free materials has reached a new le...

Ankylotic root resorption is a serious complication following traumatic dental injuries. The aetiology of root resorption includes acute injury to the cementum and periodontal ligament, and subsequent biological processes that propagate the harm. The aim of the present paper is to present a structured treatment protocol for teeth that have experien...

Background Bio cellulose is a byproduct of sweet tea fermentation known as kombusha. During the biosynthesis by bacteria cellulose chains are polymerized by enzyme from activated glucose. The single chains are then extruded through the bacterial cell wall. Interestingly, a potential of the Kombucha’s byproduct bio cellulose (BC) as biomaterial had...

Abstract Background: Parents receive diet recommendations for their children from dentists and dietitians, but a conflict of diet suggestions has been reported. This research was conducted to investigate dental caries experiences in children consuming snacks that were recommended by dentists and/or dietitians. Material and methods: A total of 442...

Background This study compared two well-known computer-aided-design/computer-aided-manufactured (CAD/CAM) blocks (Paradigm MZ100 [3M ESPE] and Vitablocs Mark II [Vita] in terms of fracture toughness (Kic), index of brittleness (BI) and stress/strain distributions. Material and Methods Three-point bending test was used to calculate the fracture tou...

Background An understanding of tooth enamel mineral content using a clinically viable method is essential since variations in mineralization may serve as an early precursor of a dental health issues, and may predict progression and architecture of decay in addition to assessing the success and effectiveness of the remineralization strategies. Mate...

During a fiber post cementation, bonding failure often occurs at the junction between the fiber-post and resin-cement. Because this failure requires better characterization, we evaluated if different post surface treatment can affect the bond strength of urethane dimethacrylate (UDMA) fiber-posts with resin-cements. Three groups were created: G1: n...

Background: This study explores the pattern of complications occurrence resulting from traumatic dental injuries, the relation of this pattern to the number of years from the time of the injury to its first diagnosis, and other contributing characteristics such as root development and trauma characteristic. Material and methods: Patients' data t...

Background Different CAD/CAM machines’ generation may impact the restoration overall quality. The present study evaluated the marginal fit of CAD/CAM restorations manufactured with different generations of CEREC milling unit systems. Material and Methods Sixteen typodont teeth were divided into two groups (n=8) according to the machine’s generatio...

Background Measurement of tooth enamel mineralization using a clinically viable method is essential since variation of mineralization may be used to monitor caries risk or in assessing the effectiveness of remineralization therapy. Fiber optic Raman systems are becoming more affordable and popular in context of biomedical applications. However, the...

This article discusses neuropathic pain of traumatic origin affecting the trigeminal nerve. This syndrome has been termed painful traumatic trigeminal neuropathy by the International Headache Society and replaces atypical odontalgia, deafferentation pain, traumatic neuropathy, and phantom toothache. The discussion emphasizes the diagnosis and the e...

Ceramic and composite resin blocks for CAD/CAM machining of dental restorations are becoming more common. The sample sizes affordable by these blocks are smaller than ideal for stress intensity factor (SIF) based tests. The J-integral measurement calls for full field strain measurement, making it challenging to conduct. Accordingly, the J-integral...

Purpose: To evaluate the image quality generated by eight commercially available intraoral sensors. Methods: Eighteen clinicians ranked the quality of a bitewing acquired from one subject using eight different intraoral sensors. Analytical methods used to evaluate clinical image quality included the Visual Grading Characteristics method, which h...

Objective: Oral cancer is an increasingly growing health care burden in many parts of the world. Due to the relatively low prevalence of oral cancer, screening will lead to a low yield and a high proportion of false positive results. Clinical examination without histologic diagnosis can lead to misdiagnosis in over 40% of cases, especially when pr...

Background: The aim of this study was to determine the microtensile bond strength (μTBS) of ceramic and composite computer aided design-computer aided manufacturing (CAD-CAM) blocks bonded to dentin using different adhesive strategies. Materials and methods: In this in vitro study, 30 crowns of sound freshly extracted human molars were sectioned...

RESULTS: There was no significant difference between the two groups when comparing answers to the pre- and post-treatment questionnaires. Pooled data showed significant differences for all domains between the pre-treatment and post-treatment responses, denoting improvement after an implant retained mandibular overdenture was delivered.

A Comprehensive Care Experience Level (CCEL) system that is aligned with Commission on Dental Accreditation (CODA) standards, promotes comprehensive care and prevention, and addresses flaws observed in previous Relative Value Units (RVU)-based programs has been implemented at the School of Dental Medicine, Case Western Reserve University since 2011...

Shockwave therapy is used in medicine due to its ability to stimulate healing processes. The application of orthodontic force evokes an inflammatory reaction resulting in tooth movement. Shockwave therapy might have an effect on both inflammatory and periodonal ligament cytokine profiles. Our aim was to evaluate the fluctuations of different inflam...

Pain is a global health problem, the effects of which range from diminished quality of life to pain management costs and loss of work and productivity. Pain in the head and neck region is defined as a separate entity: orofacial pain (OFP). However , some graduates from dental schools have reported feeling less competent in their ability to diagnose...

The idea of basing clinical procedures upon evidence gathered by observation is less than 200 years old, with the first set of evidence-based position papers dating back only to the early 1970s. The relationship between evidence-based education and health outcomes is difficult to test and may be indirect, but teaching critical appraisal skills may...

The Cochrane Oral Health Group (COHG) was formed in 1994 with the aim of producing systematic reviews that primarily include oral health randomized controlled trials (RCTs). The purpose of this cross-sectional study was to characterize reviews published by the COHG. In September 2013, the COHG database was accessed, and all publications were downlo...

Osteonecrosis of jaws (ONJ) is a chronic disease characterized by necrotic bone from any number of causes. ONJ can also occur due to several systemic and local factors which compromise blood flow within the bone. Among anti-resorptive medications, a very low risk of ONJ development is associated with oral bisphosphonates used for the management of...

Orofacial pain (OFP) is a group of symptoms affecting a significant portion of the population; inadequate diagnosis and management of these symptoms present a potential detrimental effect on the public's health. It has been suggested that dental schools must prepare their graduates to deal with these problems rather than relying on their participat...

This study compared two treatments for mild noncarious cervical lesions (NCCLs): a subepithelial connective tissue graft (CTG) versus a Class V composite resin restoration (CRR). Twenty-six sites with NCCLs were randomly assigned to be treated by CTG or CRR. Periodontal health parameters and dentinal hypersensitivity (DH) were recorded at baseline...

Introduction The purpose of this investigation was to evaluate (1) the differences in treatment planning decisions between dental general practitioners and specialists and (2) the role of patients' insurance and/or type of treatment in decision making. Methods One hundred eighty subject charts were selected from 1,740 dental charts. Two specialist...

Objective: Traumatic lesion of the lip buccal mucosa may develop due to a repetitive lip sucking habit, secondary to a dental space which opened in the dental in adult patients. The non surgical treatment approach is based on increasing of patient's awareness to the sucking habit along with the creation of a change in the oral and dental surroundi...

Ideal interproximal contacts between adjacent natural teeth or dental restorations are a critical factor for the health of the dental-alveolar complex. Interproximal contact tightness is a physiological entity affected by many patient-related and restorative parameters. This variation poses a challenge in defining the "clinically acceptable" contac...

Although needle breakage is a rare event in dentistry, the occurrence can cause significant distress to the patient and the clinician. Taking appropriate measures to prevent this mishap is best. However, when this event occurs, appropriate planning and retrieval of the needle can lessen the detrimental effects. In this report, we document the migra...

MRI has been established as the imaging modality of choice for the evaluation of temporomandibular joint disorders (TMD), as it allows for a noninvasive detailed evaluation of the joint that is not otherwise available. During the last decade, the introduction of dynamic (cine-mode) MR imaging has made functional evaluation feasible in addition to t...

Objective: To prospectively compare two treatments for mild non-carious cervical lesions (NCCLs), a subepithelial connective tissue graft (CTG) vs. a class V composite resin restoration (CRR). Method: 26 sites from 9 patients with NCCLs were randomly assigned to be treated by a CTG or a CRR. Periodontal health parameters including Gingival Index,...

Objective: The aim of this study was to determine the association of periodontal risk assessment and disease progression in a dental school clinic. Method: Ninety-three patient charts with moderate or high periodontal risk status in 2009 were reviewed three years later to assess periodontal disease progression. Change in pocket depth was calculat...

The principle of evidence-based dentistry requires that relevant scientific literature be integrated into the dentist's practice and the patient's treatment needs and wishes. This approach involves critically appraising the scientific literature for the best available evidence in order to make clinical decisions. The purpose of the study was to cri...

Objective Peer assessment is grounded in philosophies of active learning, and it would seem that this tool is a viable method for critical thinking development. The purpose of this article was to present how junior students at Case Western Reserve University School of Dental Medicine (CWRU) perceive the value of a peer-assessment activity in the co...

Systematic reviews analyze the data of published research in an effort to assemble the scientific evidence to help clinicians apply evidence-based information in decision making. The quality of systematic reviews varies greatly. This study critically appraised the current systematic review process by evaluating systematic reviews that pertain to zi...

Over the last two decades, the concept of evidence-based medicine (EBM) has become the standard of medical care. Defined by Sackett et al. as "the conscientious, explicit, and judicious use of current best evidence in making decisions about the care of individual patients," EBM recognizes that the practitioner should combine individual clinical exp...

Objective: Digital technologies provide clinically acceptable results comparable to traditional films while having other advantages such as the ability to store and manipulate images, immediate evaluation of the image diagnostic quality, possible reduction in patient radiation exposure, and so on. The purpose of this paper is to present the result...

IL-12p70 is a proinflammatory cytokine secreted by dendritic cells, monocytes and macrophages. It plays a crucial role in cell-mediated immunity by inducing proliferation of T cell and natural killer cells, and enhancing their cytotoxic activity. In adaptive immune response, it acts on naive T cells to differentiate into Th1-type cells. It is compo...

Caries development is determined by a balance of protective and pathological factors, so the clinician should be able to identify and document those factors, understand their relative weight in disease development or reversal, and make recommendations to patients that will lead to risk reduction. The caries management by risk assessment (CAMBRA) pr...

Patient recall should be a tool to support prevention, allow early intervention, and ensure long-term dental health. Although the concept of patient-customized recall intervals has increased in popularity, recommendations vary significantly. Concepts of risk assessment-derived recalls are described in the literature separately for caries, periodont...

The evolution of production systems is tightly linked to the story of Toyota Motor Company (TMC) that has its roots around 1918. The term “lean” was coined in 1990 following the exploration of the Toyota model that led to the “transference” thesis sustaining the concept that manufacturing problems and technologies are universal problems faced by ma...

Dental implants are an aesthetic and functional way to replace missing teeth, prevent bone loss, and provide strength and stability. This study reports the outcomes of implant installation in 431 patients of Case School of Dental Medicine. Objective: of the study was to evaluate implant failures and complications to determine which health and demog...

Objectives: To evaluate clinical and test-bench X-Ray images taken with 8 digital intraoral sensors (DIS). We hypothesized that clinical and bench-test images scores are correlated. Methods: Planmeca-Intra x-ray machine was used with the following exposure parameters: 63 kVp, 8 mA, 0.064seconds. One subject had a bite-wing X- Ray image take...

As more dental schools adopt a comprehensive care model focused on patients' needs rather than a certain number of required procedures, clinic time utilization by students is coming under increasingly close scrutiny. This article presents an analysis of the influence of broken appointment rates on dental students' clinical experience levels. The to...

The prevalence of gingival recessions and the number of root surfaces exposed to the oral environment both increase with age. In turn, these increases place the older population at increased risk for caries; it is estimated that 23.7% of those over the age of 65 have root caries.1 Glass ionomer (GI) seems particularly suitable for restoring root le...

In the past, the approach for treating caries was mainly symptomatic and involved removal of caries, teeth restoration, oral hygiene instructions, and fluoride applications in cases that presented with significant disease. As the bacterial component of the disease was revealed, questions emerged concerning the significance of each strain present an...

This article presents the evaluation and outcome of improvements carried out at Case Western Reserve School of Dental Medicine (CWRU) based on feedback provided by students during implementation of electrical handpieces technology in the school. Students were surveyed in February 2010 (first survey) regarding their satisfaction with the existing cl...

Scleroderma is an autoimmune multisystem rheumatic condition that affects connective tissues. Oral manifestations of the disease are directly relevant to the dental and periodontal diagnosis, treatment plan, and management of patients diagnosed with scleroderma. In the presented case, progressive limitation of mouth opening together with severe car...

The aim of this study was to evaluate patients suffering from burning mouth syndrome (BMS) and control subjects by means of sensory testing and fungiform papillae count. The left and right anterior two-thirds of the tongue of of 25 BMS subjects and 20 healthy control subjects were evaluated for electric taste and electric detection threshold. The n...

As the population ages, an increased prevalence of gingival recessions and root surfaces exposed to the oral environment has been reported. This in turn causes an increased risk for caries; it is estimated that the incidence of root caries in those older than 65 years of age is 23.7%. Published data support the use of glass ionomer as a restorative...

Objective: To examine the effect of the implementation of a CAMBRA based risk assessment program in an educational clinical setting. Methods: Sixty-eight adult patients with at least moderate caries risk were recalled for a follow-up caries risk assessment (CRA). A CRA form was completed, including bitewings. We calculated change scores for high...

to assess the prevalence of headaches and painful tempormandibular disorders (TMDs) and examine these via demographic and specific lifestyle parameters, as well as examine the relationship among TMDs, headaches, and depression rates. a group of 359 medical and dental students completed a detailed questionnaire regarding demographic features and the...

Heat and electrical detection thresholds were assessed in 72 patients suffering from painful temporomandibular disorder. Employing widely accepted criteria, 44 patients were classified as suffering from temporomandibular joint (TMJ) arthralgia (i.e. pain originating from the TMJ) and 28 from myalgia (i.e. pain originating from the muscles of mastic...

The purpose of this study was to assess the sensory function of trigeminal nerve A-beta fibers in suspected soft tissue oral malignancies. Twenty-three patients referred for the evaluation of an oral lesion suspected of malignancy were included in the study. All lesions were classified as in, near, or out of the nerve territory containing the lesio...