Dentistry Commons^™

A Retrospective Evaluation Of Crown-Fractured Permanent Teeth Treated In A Pediatric Dentistry Clinic, H. Cem Güngör, Serdar Uysal, Nil Altay

School of Dentistry Faculty Research and Publications

A retrospective study was carried out on the dental trauma records of 93 patients (55 boys, 38 girls) with 129 crown-fractured teeth. The patients’ average age was 9.57 years (SD 1.57), ranging between 7 and 15 years. Uncomplicated crown facture (comprising enamel–dentin) was the most observed type of injury (n = 107, 83%). Only 15 patients (16.13%) sought treatment in less than 24 h following the injury. Of 41 injured teeth (31.79%) the apices were open at the time of presentation at the clinic. The initial treatment of these injured teeth were interim restoration with acid-etch and composite (69%), …

Shear Bond Strength Comparison Between Two Orthodontic Adhesives And Self-Ligating And Conventional Brackets, Rodney G. Northrup, David W. Berzins, T. Gerard Bradley, William I. Schuckit

School of Dentistry Faculty Research and Publications

Objective: To evaluate and compare the shear bond strengths of two adhesives using two types of brackets: a conventional and a self-ligating bracket system.

Materials and Methods: Sixty extracted human premolars were collected. The premolars were randomly divided into three groups of 20 teeth. All three groups were direct bonded. Groups 1 and 2 used light-cured adhesive and primer (Transbond XT) with a conventional (Orthos) and a self-ligating bracket (Damon 2), respectively. Group 3 used a light-cured primer (Orthosolo) and a light-cured adhesive (Blūgloo) with a self-ligating bracket (Damon 2). The specimens were stored in distilled water at 37°C for …

Root Fracture In Immature Tooth: Report Of A Case, H. Cem Güngör, Bülent Büyükgüral, Serdar Uysal

School of Dentistry Faculty Research and Publications

Root fracture injuries affect 0.5–7% of permanent teeth. Although this type of injury is rarely seen in teeth with immature root formation, the prognosis is generally good depending on the site of the fracture. A case report of horizontal root fracture in maxillary central incisor of an 8-year and 3-month-old girl and its treatment was presented.

Myopericytoma Of The Oral Cavity, Vivekanand Datta, Yeshwant B. Rawal, Harry H. Mincer, Mark K. Anderson

School of Dentistry Faculty Research and Publications

Background.

Myopericytoma is a rare mesenchymal neoplasm of pericytic cells demonstrating myoid differentiation. The lesion typically arises within the subcutaneous tissue of the extremities. We report a case that, to the best of our knowledge, is the first case of myopericytoma involving the soft tissue of the oral cavity.

Methods.

A 36-year-old woman had a 5-mm sessile, whitish-pink, firm tongue nodule. The patient underwent excisional biopsy, and histopathologic examination as well as immunohistochemical analysis were performed.

Results.

The differential diagnosis by histologic analysis included solitary fibrous tumor, myofibroma, glomus tumor, and myopericytoma. The results of immunohistochemical analysis, when combined with …

Traumatic Neuroma Following Sagittal Split Osteotomy Of The Mandible, R. H. Kallal, F. G. Ritto, Luis Eduardo Almeida, D. J. Crofton, G. P. Thomas

School of Dentistry Faculty Research and Publications

A 16-year-old male underwent bilateral sagittal split osteotomy of the mandible to correct a mandibular deficiency. Twenty-one years later, a routine panoramic radiograph revealed a radiolucent lesion on the left side of the mandible. The lesion was biopsied. As the patient did not have symptoms and the lesion was connected to the inferior alveolar nerve, the lesion was not totally excised in order to preserve nerve function. The histological features were consistent with traumatic neuroma, and no further surgical procedure was planned.

Thermal Analysis Of As-Received And Clinically Retrieved Copper-Nickel-Titanium Orthodontic Archwires, Matthew C. Biermann, David W. Berzins, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

Objective: To compare as-received copper-nickel-titanium (CuNiTi) archwires to those used in patients by means of differential scanning calorimetry (DSC). Also, the thermal or phase properties of 27°C, 35°C, and 40°C CuNiTi archwires were studied to ascertain if their properties match those indicated by the manufacturer.

Materials and Methods: Six wires of 27°C, 35°C, and 40°C CuNiTi were tested as-received, and six each of the 27°C and 35°C wires were examined after use in patients for an average of approximately 9 and 7 weeks, respectively. Segments of archwire were investigated by DSC over the temperature range from −100°C to 150°C at …

Immediate Surgical Repositioning Following Intrusive Luxation: A Case Report And Review Of The Literature, H. Cem Güngör, S. Burcak Cengiz, Nil Altay

School of Dentistry Faculty Research and Publications

This report presents a case of severe intrusive luxation of mature maxillary lateral incisor in a 10-year-old boy. The intruded tooth was immediately repositioned (surgical extrusion) and splinted within 2 h following injury. Tetracycline therapy was initiated at the time of repositioning and maintained for 10 days. Pulp removal and calcium hydroxide treatment of the root canal was carried out after repositioning. Splint was removed 1 month later. Definitive root canal treatment with gutta percha was accomplished at the second month recall. Clinical and radiographic examination 28 months after the surgical extrusion revealed satisfactory apical and periodontal healing.

Buccal And Palatal Talon Cusps With Pulp Extensions On A Supernumerary Primary Tooth, Esin Siraci, H. Cem Güngör, Zafer C. Cehreli, B. Taner

School of Dentistry Faculty Research and Publications

This paper reports an unusual occurrence of talon cusp on a supernumerary primary incisor, presenting on both labial and palatal sides. The tooth was scheduled for extraction due to its interference with the occlusion. Morphometric analysis of the taloned cusps was performed on digitized replicas of the tooth crown using open-source image analysis toolkit (ImageJ). Further non-destructive investigation of the taloned crown under cone-beam X-ray computed tomography revealed pulpal extensions in both talon cusps.

Bond Strength Of Direct And Indirect Bonded Brackets After Thermocycling, Jacob Daub, David W. Berzins, Brandon James Linn, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

Thermocycling simulates the temperature dynamics in the oral environment. With direct bonding, thermocycling reduces the bond strength of orthodontic adhesives to tooth structure. The purpose of this study was to evaluate the shear bond strengths (SBS) of one direct and two indirect bonding methods/adhesives after thermocycling. Sixty human premolars were divided into three groups. Teeth in group 1 were bonded directly with Transbond XT. Teeth in group 2 were indirect bonded with Transbond XT/Sondhi Rapid Set, which is chemically cured. Teeth in group 3 were indirect bonded with Enlight LV/Orthosolo and light cured. Each sample was thermocycled between 5°C and …

A Comparison Of Bond Strength Between Direct- And Indirect-Bonding Methods, Brandon James Linn, David W. Berzins, Virendra B. Dhuru, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

The purpose of this study was to evaluate and compare the shear bond strength and the sites of bond failure for brackets bonded to teeth, using two indirect-bonding material protocols and a direct-bonding technique. Sixty extracted human premolars were collected and randomly divided into three groups. The direct-bonded group (group 1) used a light-cured adhesive and primer (Transbond XT). One indirect-bonded group (group 2) consisted of a chemical-cured primer (Sondhi Rapid Set) and light-cured adhesive (Transbond XT), whereas the other group (group 3) used a light-cured primer (Orthosolo) and adhesive (Enlight LV). Forty hours after bonding, the samples were debonded. …

Force To Debond Brackets From High-Fusing And Low-Fusing Porcelain Systems, Nicholas P. Ferri, Theodore Eliades, Spiros Zinelis, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

The purpose of this study was to test the hypothesis that porcelain surface finishing, ie, low- and high-fusing porcelain, has an effect on the amount of force required to debond orthodontic brackets. A total of 20 high-fusing and 20 low-fusing porcelain specimens were prepared, polished, and bonded with standard edgewise brackets using a suggested porcelain bonding protocol. The brackets were debonded with a universal testing machine at shear mode. Resin removal was performed using two methods: a multifluted carbide bur with and without the use of Sof-Lex polishing discs. Representative specimens were studied under a scanning electron microscope before and …

Porcelain Surface Roughness, Color And Gloss Changes After Orthodontic Bonding, Jacob Jarvis, Spiros Zinelis, Theodre Eliades, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

The purpose of this study was to evaluate the alteration in surface characteristics after orthodontic debonding of two types of porcelain systems commonly used in prosthetic dentistry. For this purpose, porcelain specimens were fabricated from low-fusing (n = 20) and high-fusing (n = 20) porcelain. The baseline surface roughness, color, and gloss were evaluated using profilometry, color shade index, and gloss study. All specimens were bonded with brackets and debonded using a testing machine at a rate of 0.1 mm/minute crosshead speed. The porcelain surfaces were polished using a 12-fluted carbide composite removal bur (low-fusing, n = 20; high-fusing, n …

Gnathic Osteoblastoma: Clinicopathologic Review Of Seven Cases With Long-Term Follow-Up, Yeshwant B. Rawal, Francesca Angiero, Carl M. Allen, John R. Kalmar, Parish P. Sedghizadeh, Andrew M. Steinhilber

School of Dentistry Faculty Research and Publications

The clinical, radiographic and histopathologic features of seven cases of osteoblastoma of the jaw bones were analyzed. The mandible was involved in six cases and a periosteal presentation of the tumor was noted in three cases. Six tumors were symptomatic with pain being the common presentation. The radiographic appearance of the intraosseous tumors varied from well-defined radiolucencies to poorly-defined mixed lesions. A small periosteal tumor was undetectable radiographically. Histopathologically, the tumors exhibited variation in woven bone formation, osteoblastic rimming, lesional maturation as well as interaction of the tumor with surrounding host tissue. Intraosseous tumors were managed with aggressive surgical curettage …

Soft Tissue To Hard Tissue Advancement Ratios For Mandibular Elongation Using Distraction Osteogenesis In Children, Michael B. Melugin, Pamela R. Hanson, Christopher A. Bergstrom, William I. Schuckit, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

Distraction osteogenesis is extensively used for the elongation of hypoplastic mandibles in children, yet the soft tissue profile response to this is not well understood. The pre- and posttreatment lateral cephalometric radiographs of 27 pediatric patients who underwent bilateral mandibular elongation using distraction osteogenesis were analyzed retrospectively to correlate horizontal soft tissue advancement with horizontal underlying bone advancement at B point and pogonion. Horizontal advancement (in millimeters) of bone and overlying soft tissue at these points was collected from the radiographs of each patient, and linear regression analysis was performed to determine the relationship of hard to soft tissue horizontal …

Suppression Of The Tumorigenic Phenotype In Human Oral Squamous Cell Carcinoma Cells By An Ethanol Extract Derived From Freeze-Dried Black Raspberries, Kapila A. Rodrigo, Yeshwant B. Rawal, Robert J. Renner, Steven J. Schwartz, Qingguo Tian, Peter R. Larsen, Susan R. Mallery

School of Dentistry Faculty Research and Publications

Despite focused efforts to improve therapy, 5-yr survival rates for persons with advanced-stage oral squamous cell carcinoma (SCC) remain discouragingly low. Clearly, early detection combined with strategies for local intervention, such as chemoprevention prior to SCC development, could dramatically improve clinical outcomes. Previously conducted oral cavity human chemoprevention trials, however, have provided mixed results. Although some therapies showed efficacy, they were often accompanied by either significant toxicities or circulating antiadenoviral antibodies. It is clearly apparent that identification of nontoxic, effective treatments is essential to prevent malignant transformation of oral epithelial dysplasias. This study employed cell lines isolated from human oral …

Clinical And Experimental Applications Of Nir-Led Photobiomodulation, Kristina D. Desmet, David A. Paz, Jesse J. Corry, Janis T. Eells, Margaret T. T. Wong-Riley, Michele M. Henry, Ellen V. Buchmann, Mary P. Connelly, Julia V. Dovi, Huan Ling Liang, Diane S. Henshel, Ronnie L. Yeager, Deborah S. Millsap, Jinhwan Lim, Lisa J. Gould, Rina Das, Marti Jett, Brian D. Hodgson, David Margolis, Harry T. Whelan

School of Dentistry Faculty Research and Publications

This review presents current research on the use of far-red to near-infrared (NIR) light treatment in various in vitro and in vivo models. Low-intensity light therapy, commonly referred to as “photobiomodulation,” uses light in the far-red to near-infrared region of the spectrum (630–1000 nm) and modulates numerous cellular functions. Positive effects of NIR–light-emitting diode (LED) light treatment include acceleration of wound healing, improved recovery from ischemic injury of the heart, and attenuated degeneration of injured optic nerves by improving mitochondrial energy metabolism and production. Various in vitro and in vivo models of mitochondrial dysfunction were treated with a variety of …

Spatially-Oriented Emr For Dental Surgery, Min Wu, Lisa J. Koenig, John Lynch, Thomas S. Wirtz

School of Dentistry Faculty Research and Publications

As digital dental images become widely available, a new Electronic MR system (EMR) will be critical for the success of applying new technology to dental care. This project is designed an image-based and spatially-oriented EMR for dental surgery. A new panoramic image-based annotation model will be developed, which will complement dental charting precisely locating specific spatial findings for each patient. A spatially-oriented, multilayered data model for dental EMR will be developed using Geographic Information System (GIS) methods. This project will explore the possibility of applying head and neck images from VHP into a spatially-oriented EMR system.

The Absence Of Cd20 Messenger Rna In Recurrent Cutaneous B-Cell Lymphoma Following Rituximab Therapy, Yeshwant B. Rawal, Gerard J. Nuovo, Gwyn E. Frambach, Pierluigi Porcu, Robert A. Baiocchi, Cynthia M. Magro

School of Dentistry Faculty Research and Publications

Background: Rituximab has been used to treat relapsed low-grade or advanced non-Hodgkin's lymphoma since 1997, targeting the CD20 antigen expressed by B cells. Single-agent rituximab therapy is safe and well tolerated. Recurrences showing a loss of CD20 expression following rituximab therapy have been reported.

Methods: Four patients with CD20-positive cutaneous B-cell lymphoma received rituximab therapy with subsequent recurrences. The biopsies were assessed for cytoplasmic CD20 expression; CD20 messenger RNA was also assessed where tissue was available.

Results: Cutaneous relapses occurring within 1.5–3 months following the last dose of rituximab were CD20 negative. In three cases, subsequent relapses showed renewed expression …

Treatment Of The Prominent Mandibular Angle By Using A Custom Made Surgical Splint, Luis Eduardo Almeida, Kingsley Wang, Davani Costa, Marco Antonio De Oliveira Filho

School of Dentistry Faculty Research and Publications

In this case report, we would like to present an alternative surgical technique for the treatment of the bilateral prominent mandibular angles by using a custom-made resin splint (template). The prefabricated template provided a precise outline for the osteotomy, which alleviated the uncertainty of the osseous cut. Furthermore, masseter muscle myomectomy was not necessary in this case which decreased morbidity, and procedure and recovery time, while assuring a more symmetric outcome.

Presentation Of An Epithelioid Cell Histiocytoma On The Ventral Tongue, Yeshwant B. Rawal, John R. Kalmar, Brian S. Shumway, Susan R. Mallery

School of Dentistry Faculty Research and Publications

The epithelioid cell histiocytoma (ECH) is a polypoidal benign tumor of superficial connective tissue that is often diagnosed as a pyogenic granuloma. ECHs are speculated to originate from dermal dendritic subunits and are composed of 2 primary cell populations, ie, CD34⁺ primitive fibroblastic dendrocytes and factor XIIIa⁺ histiocytes. Although dendritic subunits are distributed throughout most collagenous tissues inclusive of oral mucosa, to date, all reported cases of ECH have been cutaneous lesions. ECHs' putative pathogenesis entails activation of CD34⁺ “sentinel” reserve dendrocytes, followed by an influx of histiocytes and mast cells. Juxtacrine communication increases release of wound …

Prevention Of Periodontal Diseases, Andrew R. Dentino, Moawia M. Kassab, Erica J. Renner

School of Dentistry Faculty Research and Publications

No abstract provided.

Palatal Perforation Associated With Intranasal Prescription Narcotic Abuse, Wendi M. Jewers, Yeshwant B. Rawal, Carl M. Allen, John R. Kalmar, Eric Fox, Guillermo E. Chacon, Parish P. Sedghizadeh

School of Dentistry Faculty Research and Publications

Background

Palatal perforation resulting from insufflation of cocaine has been well documented. In comparison, reports of destructive orofacial lesions resulting from intranasal abuse of prescription narcotics are rare. We present the clinical and histologic findings in a case of palatal perforation arising in a patient abusing a prescription opioid drug. The patient denied any history of cocaine use but admitted to habitually crushing and snorting a hydrocodone/acetaminophen preparation.

Study design

The patient presented to our clinic seeking resolution of speech difficulties associated with an oroantral fistula. Surgical repair of the defect had been attempted unsuccessfully in the past. In addition …

Adhesive Fragment Reattachment After Orthodontic Extrusion: A Case Report, S. Burcak Cengiz, Ilken Kocadereli, H. Cem Güngör, Nil Altay

School of Dentistry Faculty Research and Publications

In the treatment of crown fractures, adhesive fragment reattachment provides a good alternative to other restorative techniques, offering several advantages. The present paper reports a case in which the treatment of a cervical crown fracture was accomplished by reattaching the tooth fragment with a flowable resin composite. Orthodontic root extrusion was performed with a modified Hawley appliance prior to fragment reattachment. The clinical and radiographic results after 2.5 years were successful.

Pilot Survey Of Oral Health-Related Quality Of Life: A Cross-Sectional Study Of Adults In Benin City, Edo State, Nigeria, Christopher Okunseri, Amit Chattopadhyay, R Iván Lugo, Colman Mcgrath

School of Dentistry Faculty Research and Publications

Background

Oral health studies conducted so far in Nigeria have documented prevalence and incidence of dental disease using traditional clinical measures. However none have investigated the use of an oral health-related quality of life (OHRQoL) instrument to document oral health outcomes. The aims of this study are: to describe how oral health affects and impacts quality of life (QoL) and to explore the association between these affects and the oral health care seeking behavior of adults in Benin City, Edo State, Nigeria.

Methods

A cross-sectional survey recruited 356 adults aged 18–64 years from two large hospital outpatient departments and from …

Structural Conformation And Leaching From In Vitro Aged And Retrieved Invisalign Appliances, Susan Schuster, George Eliades, Spiros Zinelis, Theodore Eliades, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

The objectives of this study were to investigate the structure of Invisalign appliances (Align Technology, Santa Clara, Calif) after intraoral exposure, and to qualitatively and quantitatively characterize the substances leached from the aligners after accelerated in vitro aging. Samples of Invisalign appliances were randomly selected from 10 patients before intraoral placement and after retrieval, and the prepared specimens were subjected to (1) bright-field optical reflection microscopy to study the surface morphology; (2) Fourier transform infrared microspectroscopy to characterize the in vivo changes in molecular composition induced on appliance surfaces, (3) scanning electron microscopy and energy dispersive X-ray microanalysis to identify …

Post-Irradiation Leiomyosarcoma Of The Maxilla: Report Of A Case In A Patient With Prior Radiation Treatment For Retinoblastoma, Parish P. Sedghizadeh, Francesca Angiero, Carl M. Allen, John R. Kalmar, Yeshwant B. Rawal, Eric A. Albright

School of Dentistry Faculty Research and Publications

Post-irradiation sarcoma is a well-defined complication of radiation therapy, yet few reports document such lesions in the head and neck. A 30-year-old man presented for evaluation of an expansile lesion of the left posterior maxilla. His medical history was significant for a childhood ocular malignancy - unilateral retinoblastoma - which was treated with a combination of surgical enucleation of the eye and external beam radiation therapy. Biopsy of his maxillary lesion revealed a spindle cell malignancy that was morphologically and immunohistochemically consistent with a diagnosis of leiomyosarcoma. Further investigation into the case revealed that the patient had three children, every …

Exposure To The Dental Environment And Prevalence Of Respiratory Illness In Dental Student Populations, Frank A. Scannapieco, Alex W. Ho, Maris Ditolla, Casey Chen, Andrew R. Dentino

School of Dentistry Faculty Research and Publications

Objective: To determine if the prevalence of respiratory disease among dental students and dental residents varies with their exposure to the clinical dental environment.

Methods: A detailed questionnaire was administered to 817 students at 3 dental schools. The questionnaire sought information concerning demographic characteristics, school year, exposure to the dental environment and dental procedures, and history of respiratory disease. The data obtained were subjected to bivariate and multiple logistic regression analysis.

Results: Respondents reported experiencing the following respiratory conditions during the previous year: asthma (26 cases), bronchitis (11 cases), chronic lung disease (6 cases), pneumonia (5 cases) …

The Paradigm Of The Relationship Among Occlusion, Orthodontics And Temporomandibular Disorders, Jose A. Bosio

School of Dentistry Faculty Research and Publications

The relationship between occlusion, Orthodontics and temporomandibular disorders have been subject of discussions and controversies. In the past, the scientific literature stated that the temporomandibular disorders occurred due to the malocclusion, and, for its correction, an orthodontic treatment should be performed. Apparently, those theories have become obsoletes, and according to more consistent scientific articles, the relationship among these entities have been questioned. This literature review shows a possible change in the paradigm of the relationship among the three entities.

Morphology Of Root Canal Cross-Sections Of Resected Roots Of First And Second Lower Molars, Mariusz Duda, Agata Skoczek, Bartlomiej Kowal, Agnieszka Domagala

School of Dentistry Faculty Research and Publications

Precise preparation of the root canal ostium with a view to hermetical closing with retrograde root filling is an important prognostic factor determining the success of the procedure of tooth resection. Root canals interconnected with a narrow isthmus may cause problems both in endodontic treatment and in retrograde filling. The aim of this work is the research of the transverse cross-section of root canals of first and second lower molars on the resection model. The research encompasses 100 randomly selected molar teeth: 50 first and 50 second lower molars. The tooth root apexes were cut 3 mm below the apex …

Nasa Light-Emitting Diodes For The Prevention Of Oral Mucositis In Pediatric Bone Marrow Transplant Patients, Harry T. Whelan, James F. Connelly, Brian D. Hodgson, Lori Barbeau, A. Charles Post, George Bullard, Ellen V. Buchmann, Mary Kane, Noel T. Whelan, Ann Warwick, David Margolis

School of Dentistry Faculty Research and Publications

Objective: The purpose of this study was to determine the effects of prophylactic near-infrared light therapy from light-emitting diodes (LEDs) in pediatric bone marrow transplant (BMT) recipients.

Background Data: Oral mucositis (OM) is a frequent side effect of chemotherapy that leads to increased morbidity. Near-infrared light has been shown to produce biostimulatory effects in tissues, and previous results using near-infrared lasers have shown improvement in OM indices. However, LEDs may hold greater potential for clinical applications.

Materials and Methods: We recruited 32 consecutive pediatric patients undergoing myeloablative therapy in preparation for BMT. Patients were examined by two …