bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Different Time Periods of Vital Bleaching on Flexural Strength of Bovine Enamel and Dentin Complex
Authors: Ghavamnasiri Marjaneh , LNU Sara Abedini , Tazangi Alireza Mahdizadeh 
Published: July 2019

Abstract

Aim
The aim of this in vitro study was to evaluate the effect of 20% carbamide peroxide (CP) on the flexural strength (FS) of bovine enamel and dentin complex.

Methods and Materials
One hundred sound bovine teeth were selected for use. Blocks (2×3×8 mm) from the middle portion of the facial surfaces of each crown were sectioned from the teeth. The specimens were randomly divided into five groups (n=20) based on the time period of vital bleaching. Group 1 comprised the control group kept in artificial saliva. The experimental groups subjected to immersion in 20% CP, Opalescence, for four, six and eight weeks, respectively (eight hours daily). Mechanical testing was performed 24 hours after the last treatment using an Instron Universal Testing Machine with a crosshead speed of 0.5 mm/min. The results were analyzed by one-way analysis of variance (ANOVA) and Tukey's test (α=0.05).

Results
Mean values for FS were 141.27, 103.06, 120.71, 130.23, and 117.90 (Mpa), respectively. Statistically significant differences in FS were noted among the groups. A statistically significant difference was observed between Group 2 (two week bleach) and the control.

Conclusion
Application of 20% CP bleach for two weeks provided significant decreases in FS of bovine enamel and dentin complex. Similar decreases were not observed among the other groups.

Citation
Ghavamnasiri M, Abedini S, Tazangi AM. Effect of Different Time Periods of Vital Bleaching on Flexural Strength of Bovine Enamel and Dentin Complex. J Contemp Dent Pract 2007 March;(8)3:021-028.
Histological Comparison of Bone to Implant Contact in Two Types of Dental Implant Surfaces: A Single Case Study
Authors: Shibli Jamil Awad , Feres Magda , de Figueiredo Luciene Cristina , Iezzi Giovanna , Piattelli Adriano 
Published: July 2019

AbstractAimThe purpose of this single case study was to evaluate the influence of different implant surfaces on human bone and osseointegration.Methods and MaterialsA 47-year-old partially edentulous woman received two experimental implants along with conventional implant therapy. Experimental implants placed in the mandibular ramus consisted of machined and anodized surfaces, respectively. After three months of healing, the experimental implants were removed and prepared for ground sectioning and histological analysis.ResultsThe data demonstrate anodized implant surfaces present a higher percentage of osseointegration when compared to a machined surface in cortical human bone after a healing period of three months.ConclusionThis single case study suggests an anodized implant surface results in a higher percentage of bone to implant contact when compared to machined surfaced implants when placed in dense bone tissue. However, further investigations should be conducted.CitationShibli JA, Feres M, de Figueiredo LC, Iezzi G, Piattelli A. Histological Comparison of Bone to Implant Contact in Two Types of Dental Implant Surfaces: A Single Case Study. J Contemp Dent Pract 2007 March;(8)3:029-036.
Tooth Size and Arch Dimension in Uncrowded Versus Crowded Class I Malocclusions
Authors: Poosti Maryam , Jalali Tahereh 
Published: July 2019

Abstract

Aim
The purpose of this investigation was to examine the extent to which arch dimension or tooth size contributes to dental crowding.

Methods and Materials
Two groups of dental casts were selected. Each group consisted of 30 pairs of dental casts including equal male and female samples. The first group had Class I malocclusions without crowding or spacing. The second group exhibited Class I malocclusions with severe dental crowding (> a 5 mm space deficiency). The following parameters were measured and used to compare the two groups: individual and collective mesiodistal tooth diameters, dental arch length, as well as buccal and lingual dental arch widths in the canine and molar regions. To compare the two groups the Student's t-test with 95% confidence interval was used.

Results
Statistically significant differences in both tooth diameters and transverse arch dimensions were found between the two groups. The crowded group was found to have a significantly smaller maxillary arch width and larger tooth size when compared with the uncrowded group.

Conclusion
The results of this study suggest under equal conditions (a Class I skeletal relationship) tooth size has a greater role in developing dental crowding.

Citation
Poosti M, Jalali T. Tooth Size and Arch Dimension in Uncrowded Versus Crowded Class I Malocclusions. J Contemp Dent Pract 2007 March;(8)3:045-052.
Prevalence, Clinical Picture, and Risk Factors of Dry Socket in a Jordanian Dental Teaching Center
Authors: Nusair Y.M. , Younis M.H. Abu 
Published: July 2019

Abstract

Aims
The aims of this study were to determine the prevalence, clinical picture, and risk factors of dry socket at the Dental Teaching Center of Jordan University of Science and Technology (DTC/JUST).

Methods and Materials
Two specially designed questionnaires were completed over a four-month period. One questionnaire was completed for every patient who had one or more permanent teeth extracted in the Oral Surgery Clinic. The other questionnaire was completed for every patient who returned for a post-operative visit and was diagnosed with dry socket during the study period.

Results
There were 838 dental extractions carried out in 469 patients. The overall prevalence of dry socket was 4.8%. There was no statistically significant association between the development of dry socket and age, sex, medical history, medications taken by the patient, indications for the extraction, extraction site, operator experience, or the amount of local anesthesia and administration technique used. The prevalence of dry socket following non-surgical extractions was 3.2%, while the prevalence following surgical extractions was 20.1% (P< 0.002). The prevalence of dry socket following surgical and non-surgical extractions was significantly higher in smokers (9.1%) than in non-smokers (3%) (P = 0.001), and a direct linear trend was observed between the amount of smoking and the prevalence of dry socket (P = 0.034). The prevalence of dry socket was significantly higher in the single extraction cases (7.3%) than in the multiple extraction cases (3.4%) (P = 0.018). The clinical picture and management of dry socket at DTC/JUST were similar to previous reports in the literature. The prevalence of dry socket, its clinical picture, and management at DTC/JUST are similar to those reported in the literature.

Conclusion
Smoking and surgical trauma are associated with an increased incidence of dry socket. Moreover, patients who had single extractions were more likely to develop dry socket than those who had multiple extractions in the same visit.

Citation
Nusair YM, Younis MHA. Prevalence, Clinical Picture, and Risk Factors of Dry Socket in a Jordanian Dental Teaching Center. J Contemp Dent Pract 2007 March;(8)3:053-063.
Diagnosis and Treatment of Atypical Odontalgia: A Review of the Literature and Two Case Reports
Authors: Melis Marcello , Secci Simona 
Published: July 2019

Abstract

Aim
This report presents two cases diagnosed with atypical odontalgia (AO) and successfully treated with amitriptyline as well providing a review of the current literature on the subject.

Results
The literature indicates the most important issue is an accurate differential diagnosis to distinguish between AO, pulpal pain, myofascial pain, and trigeminal neuralgia.

Conclusion
Once the correct diagnosis is made the prognosis of AO is usually fair and the administration of tricyclic antidepressants often resolves symptoms. An effort should be made to avoid any unnecessary dental treatment that would only aggravate the problem.

Citation
Melis M, Secci S. Diagnosis and Treatment of Atypical Odontalgia: A Review of the Literature and Two Case Reports. J Contemp Dent Pract 2007 March;(8)3:081-089.
Comparative Evaluation of the Marginal Sealing Ability of Fuji VII® and Concise® as Pit and Fissure Sealants
Authors: Ganesh Mahadevan , Shobha Tandon 
Published: July 2019

AbstractAimThe anatomical pits and fissures of the teeth have long been recognized as susceptible areas for the initiation of dental caries. The extreme vulnerability to decay of these pits and fissures on the occlusal surfaces has prompted dental scientists to seek methods of caries prevention. Motivated by the role of pit and fissure sealants in caries prevention, the aim of this study was to compare the efficacy of Fuji VII® glass ionomer sealant and Concise® resin-based sealant.Methods and MaterialsAnin vitrostudy was undertaken using forty premolars extracted for orthodontic reasons. The teeth were divided into two groups and sealants were applied. One was an experimental group using Fuji VII® as a pit and fissure sealant and the other a control group using Concise®. The teeth were kept in gentian violet dye for 24 hours, the sectioned samples were observed for the extent of dye penetration, and scores were based on established scoring criteria.ResultsThe comparison of the performance of the two groups showed a statistically significant difference.ConclusionThe Concise® resin-based sealant performed better in terms of sealing ability than did the Fuji VII® glass ionomer sealant.CitationGanesh M, Shobha T. Comparative Evaluation of the Marginal Sealing Ability of Fuji VII® and Concise® as Pit and Fissure Sealants. J Contemp Dent Pract 2007 May;(8)4:010-018.
Clinical Management of an Unusual Case of Gingival Enlargement
Authors: Sumanth S. , Bhat K. Mahalinga , Bhat G. Subraya 
Published: July 2019

Abstract

Aim
The purpose of this article is to report a case of conditioned gingival enlargement managed by nonsurgical periodontal therapy.

Background
Hormones are specific regulatory molecules that modulate a host of body functions. Hormonal effects reflect physiologic and pathologic changes in almost all tissues of the body with the periodontium being no exception. Physiologic changes like puberty, the menstrual cycle, and pregnancy cause hormonal variations that may cause inflammation of the gingiva. Oral contraceptives that contain estrogen and/or progesterone are associated with gingival enlargement.

Report
A 28-year-old female presented with a complaint of swelling of the gingiva with spontaneous bleeding in the maxillary anterior region for a period of one year. The health history documented the use of contraceptives for one year, and a clinical examination revealed the existence of poor oral hygiene and englarged painful gingival tissues that bled when touched.

Summary
This case reaffirms the fact plaque control is the most important procedure in any periodontal therapy. Another factor contributing to the excellent response to therapy is patient compliance. The patient followed home care instructions well and was effective in personal oral hygiene measures.

Citation
Sumanth S, Bhat KM, Bhat GS. Clinical Management of an Unusual Case of Gingival Enlargement. J Contemp Dent Pract 2007 May;(8)4:088-094.
Restoring Function and Esthetics in a Patient with Amelogenesis Imperfecta: A Case Report
Authors: Ozel Emre , Gokce Kagan , Canpolat Ceyhun 
Published: July 2019

Abstract

Aim
The purpose of this case report is to present the esthetic and functional rehabilitation of the teeth in a 22-year-old patient with Amelogenesis imperfecta (AI).

Background
AI is a group of hereditary defects of enamel, unassociated with any other generalized defects. It is a rare developmental abnormality of the enamel, with a variable occurence of approximately 1:4000 to 1:14000 in Western populations. Al results in poor development or complete absence of the enamel of the teeth caused by improper differentiation of the ameloblasts.

Report
This report describes the diagnosis and treatment of a young male patient with AI and missing molar teeth using contemporary restorative strategies. Initially, the tooth surfaces were treated with a professional cleaning along with conservative restorative treatment. Later, metal-ceramic crowns for posterior teeth and fullceramic crowns for anterior teeth were utilized for final restorations.

Summary
The complexity of the management of patients with AI supports the suggestion the dental profession should have appropriate methods for the rehabilitation of rare dental disorders. The treatment of patients with AI should start with early diagnosis and intervention to prevent later restorative problems.

Citation
Gokce K, Canpolat C, Ozel E. Restoring Function and Esthetics in a Patient with Amelogenesis Imperfecta: A Case Report. J Contemp Dent Pract 2007 May;(8)4:095-101.
Adjunctive Effects of Systemic Amoxicillin and Metronidazole with Scaling and Root Planing: A Randomized, Placebo Controlled Clinical Trial
Authors: Moeintaghavi Amir , Talebi-ardakani Mohammad Reza , Haerian-ardakani Ahmad , Zandi Hengame , Taghipour Shokouh , Fallahzadeh Hossein , Pakzad Amir , Fahami Nargess 
Published: July 2019

Abstract

Aims
Aims: The objective of this study was to investigate the effect of the systemic administration of metronidazole and amoxicillin as an adjunct to initial periodontal therapy in patients with moderate to severe chronic periodontitis.

Methods and Materials
This randomized, double blind, placebo controlled parallel study involved 50 adult patients with untreated periodontitis who were randomly assigned to receive either a full-mouth scaling and root planing along with systemic metronidazole and amoxicillin (T group) or scaling and root planing with a placebo (P group). Clinical measurements including probing depth (PD), clinical attachment levels (CAL), Plaque Index (PI), and Bleeding Index (BI) were recorded at baseline and six to eight weeks after therapy. The deepest pocket was selected and samples for microbiological testing were taken. Patients received coded study medications of either 500 mg amoxicillin in combination with 250 mg metronidazole or an identical placebo every eight hours for seven days following scaling and root planing.

Results
There was a significant change in PD (P=0.0001), CAL (P=0.00001), PI (P<0.05), and BI (P<0.05) in the T group compared to the placebo group after therapy. Parallel to the clinical changes, treatment significantly reduced the number of Actinobacillus actinomycetemcomitans (Aa), Porphyromonas gingivalis (Pg), and P. intermedia (Pi) compared with baseline in the T group (P=0.003, 0.021 and 0.0001, respectively). However, in the P group only the Pi colony count was reduced significantly (P=0.0001). After therapy, there was a significant difference between the T and P groups in the number of patients negative for Aa, Pg, and Pi (Pv = 0.033).

Conclusions
The significant differences between treatment and placebo groups are in line with other studies and support the considerable adjunctive benefits of the combination of amoxicillin and metronidazole in the treatment of chronic periodontitis.

Citation
Moeintaghavi A, Talebi-ardakani MR, Haerian-ardakani A, Zandi H, Taghipour S, Fallahzadeh H, Pakzad A, Fahami N. Adjunctive Effects of Systemic Amoxicillin and Metronidazole with Scaling and Root Planing: A Randomized, Placebo Controlled Clinical Trial. J Contemp Dent Pract 2007 July;(8)5:051-059.
Maxillary Corticotomy and Extraoral Orthopedic Traction in Mature Teenage Patients: A Case Report
Authors: Pelo Sandro , Boniello Roberto , Gasparini Giulio , Longobardi Gianluigi 
Published: July 2019

Abstract

Aim
The authors’ propose to combine the reverse pull headgear with a Delaire type face mask and a maxillary corticotomy to treat a Class III non-growing patient with maxillary retrusion. The aim of this report is to present two cases in which this treatment strategy was successful.

Background
Several studies suggest the majority of Class III dento-skeletal malocclusions have components of maxillary retrusion. Early treatment of these patients with maxillary protraction devices have shown promising results. Facemask therapy has some important limits. Most important is the optimal timing of treatment between the ages of six to ten years. Closure of the maxillary suture occurs as a child ages which results in an increase of maxillary resistance to protraction.

Report
A proposed therapy carried out in orthodontic and surgical phases was used in the treatment of two young patients. They were both beyond the optimal age range for the application of the orthopedic device (a girl 15 years old and a boy 16 years old), however, they had not reached the necessary skeletal maturity for orthognathic surgery.

Summary
The described technique has the advantage of being quick and easy to perform with a low surgical risk yielding satisfactory results after 15-20 days of therapy instead of the six to nine months associated with traditional procedures.

Citation
Pelo S, Boniello R, Gasparini G, Longobardi G. Maxillary Corticotomy and Extraoral Orthopedic Traction in Mature Teenage Patients: A Case Report. J Contemp Dent Pract 2007 July;(8)5:076-084.
Idiopathic Thrombocytopenic Purpura Presenting as Post-extraction Hemorrhage
Authors: Martini Marcelo Zillo , Lopez Jesús Saavedra , Gendler José Luiz Pinto Lima , da Fonseca Eduardo Vasques , Soares Haroldo Arid , Franzi Sergio Altini 
Published: July 2019

Abstract

Aim
The aim of this article is to present a case of idiopathic thrombocytopenic purpura (ITP) in order to emphasize the importance of the clinical exam since the anamnesis leads to a diagnostic hypothesis of ITP.

Background
Acute ITP is considered an autoimmune disease characterized by the production of antibodies against platelets, antigens produced by a viral infection, or a platelet sparing drug combination. These antibodies adhere to platelets and are recognized and destroyed by the reticulo-endothelial system. Consequently, the platelet count gradually diminishes and is insufficient for the maintenance of primary hemostasis.

Report
A 77-year-old woman presented with post-extraction intermittent bleeding. The physical examination revealed discoloration of the skin, multiple petechiae, hematomas, ecchymosis of the upper lip, bruises all over the body, gingiva that bled spontaneously, and a malformed blood clot at the extraction site of tooth #44. The hematological exams confirmed the hypothesis of ITP. The patient was immediately hospitalized in the Hematology Department of a local hospital and received platelet replacement, hydration, medication, and general care. After the spontaneous bleeding stopped, the malformed clot was removed using alveolar curettage along with a thorough cleaning of the extraction site with a 0.9% saline solution before suturing the wound and prescribing medication. After the sixth day of hospitalization, the patient presented with the following results: Hb: 12.3 mg/dL, Ht: 36.1%, and PC: 87,000 mm3. The patient was then discharged and was placed under outpatient follow-up care.

Summary
The importance of the clinical exam must be emphasized since the anamnesis leads to a diagnostic hypothesis of ITP and provides the dental surgeon with an opportunity to make important systemic alterations to improve the prognosis of a patient with ITP.

Citation
Martini MZ, Lopez JS Jr., Gendler JLPL, da Fonseca EV, Soares HA, Franzi SA. Idiopathic Thrombocytopenic Purpura Presenting as Post-extraction Hemorrhage. J Contemp Dent Pract 2007 September; (8)6:043-049.
Phenobarbital-induced Gingival Hyperplasia
Authors: Lafzi Ardeshir , Farahani Ramin Mostofi Zadeh , Shoja Mohammad Ali Mohajjel 
Published: July 2019

Abstract

Aim
The aim of this article is to present a case of a phenobarbital-induced gingival hyperplasia (GH), discuss possible etiological mechanisms of drug-induced GH, and to present a concise review of the literature.

Background
GH is a well-known complication associated with anticonvulsant phenytoin, antihypertensive calcium channel blockers, and immunosuppressant cyclosporine therapy. Sodium valproate and primidone has very rarely been found to cause GH.

Report
An extremely rare case of phenobarbital-induced GH in a 28-year-old male patient who had received this drug for three years is presented. The histological examination of the lesion revealed a hyperplastic epithelium, epithelial acanthosis, and elongated rete ridges as well as obviously enhanced dense collagenous fibers and proliferation of fibroblasts.

Summary
Phenobarbital-induced GH is a rare clinical entity which necessitates meticulous evaluation. However, it seems to show a benign behavior with reference to recurrence after surgical excision.

Citation
Lafzi A, Farahani RMZ, Shoja MAM. Phenobarbital-induced Gingival Hyperplasia. J Contemp Dent Pract 2007 September; (8)6:050-056.
Maxillary Canine Impactions Related to Impacted Central Incisors: Two Case Reports
Authors: Özer Mete , Şener Ismail , Bayram Mehmet 
Published: July 2019

Abstract

Aim
The purpose of this case report is to describe the combined surgical and orthodontic treatment of two cases with an impacted maxillary central incisor and canine in the same quadrant and to discuss the causal relationship between them.

Background
The most common causes of canine impactions are usually the result of one or more factors such as a long path of eruption, tooth size-arch length discrepancies, abnormal position of the tooth bud, prolonged retention or early loss of the deciduous canine, trauma, the presence of an alveolar cleft, ankylosis, cystic or neoplastic formation, dilaceration of the root, supernumerary teeth, and odontomas. Although impaction of the maxillary central incisor is almost as prevalent as impacted canines its etiology is different. The principal factors involved in causing the anomaly are supernumerary teeth, odontomas, and trauma.

Reports Case #1
A 10.5-year-old girl in the early mixed dentition stage presented with a chief complaint of the appearance of her anterior teeth. She had a Class I skeletal pattern and a history of trauma to the maxillary central incisors at age five with premature exfoliation. Radiographs revealed an impacted upper right central incisor in the region of the nasal floor, delayed eruption of the maxillary permanent central incisor, and the adjacent lateral incisor was inclined toward the edentulous space. Treatment was done in two stages consisting of surgical exposure and traction of the impacted central incisor and fixed orthodontic treatment.

Case #2
An 11.5-year-old girl presented for orthodontic treatment with the chief complaint of an unerupted tooth and the appearance of her upper anterior teeth. She was in the late mixed dentition period with a Class III skeletal pattern along with an anterior cross-bite with some maxillary transverse deficiency. The maxillary right canine and central incisor were absent, but the maxillary right deciduous canine was still present. Treatment included arch expansion followed by surgical exposure and traction of the impacted teeth and fixed orthodontic treatment.

Summary
This case report provides some evidence of a significant environmental influence of an impacted maxillary central incisor on the path of eruption of the ipsilateral maxillary canine. When an impacted maxillary central incisor exists, the maxillary lateral incisor's root might be positioned distally into the path of eruption of the maxillary canine preventing its normal eruption. Ongoing assessment and early intervention might help to prevent such adverse situations from occurring.

Citation
Bayram M, Özer M, Sener I. Maxillary Canine Impactions Related to Impacted Central Incisors: Two Case Reports. J Contemp Dent Pract 2007 September; (8)6:072-081.