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Korean J Pediatr 2019 Mar 15. Epub 2019 Mar 15.

Pediatric Allergy and Respiratory Center, Department of Pediatrics, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea.

Mycoplasma pneumoniae pneumonia (MPP) has been generally susceptible to macrolides, however emergence of macrolide-resistant Mycoplasma pneumoniae pneumonia (MRMP) has made the treatment of MPP challenging. MRMP rapidly spread after 2000s, especially in the Eastern Asia. MRMPs are more common in children and adolescents than in adults, which is likely related to the frequent use of macrolides for treatments of MP infections in children. Read More

J Dent 2019 Apr 12. Epub 2019 Apr 12.

Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil. Electronic address:

Objectives: This study evaluated the staining potential of TiF varnish and TiF/NaF solution on both sound and previously eroded enamel in vitro.

Methods: One hundred and eighty bovine enamel samples were polished; half of them remained sound and the other half was eroded (4 × 90 s each, using a 0.1% citric acid). Read More

Biomed Res Int 2018 23;2018:9673562. Epub 2018 Dec 23.

Ph.D., DDS, Professor Dr., Department of Prosthodontics, Faculty of Dentistry, Izmir Katip Celebi University, Izmir, Turkey.

Objective: To evaluate the effect of different desensitizing toothpastes and coffee staining on the discoloration rate of natural human tooth and composite materials.

Materials And Methods: A total of 56 human teeth and 56 composite specimens were used. After initial color measurements were taken, specimens and teeth were exposed to simulated toothbrushing with six desensitizing toothpastes containing different active ingredients: stannous fluoride, strontium acetate, potassium citrate and hydroxyapatite, cetylpyridinium chloride, arginine, and novamin. Read More

J Prosthodont Res 2019 Mar 20. Epub 2019 Mar 20.

Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo 101-0061, Japan.

Purpose: The objective of this study was to evaluate the suitability of monolithic zirconia crowns (MZC) as abutment teeth of Akers clasps on removable partial dentures (RPD) by determining the change in retentive force after repetitive insertion/removal test.

Methods: MZC and silver palladium copper alloy (Ag-Pd) full-metal crowns (FMC) for the mandibular second premolar were fabricated. Resin patterns of Akers clasps made with a 3D printer were casted with Ag-Pd or cobalt chromium alloy (Co-Cr). Read More

Int J Prosthodont 2019 Mar/Apr;32(2):177-181

Purpose: To assess the clinical performance of a prefabricated all-ceramic zirconium dioxide implant abutment for single-tooth replacement in the posterior region.

Materials And Methods: Forty implants (Xive S plus screw type, Dentsply Sirona Implants) were inserted into the posterior region in 24 patients and were provided with zirconium dioxide abutments (Cercon abutment, Dentsply Sirona Implants). The licensed range of indications for these abutments is limited to the maxillary and mandibular anterior teeth. Read More

Restor Dent Endod 2019 Feb 12;44(1):e10. Epub 2019 Feb 12.

Department of Endodontics, Faculty of Dentistry, Tehran University of Medical Sciences, International Campus, Tehran, Iran.

Objectives: The objective of this study was to assess coronal discoloration induced by the following intracanal medicaments: calcium hydroxide (CH), a mixture of CH paste and chlorhexidine gel (CH/CHX), and triple antibiotic paste (3Mix).

Materials And Methods: Seventy extracted single-canal teeth were selected. Access cavities were prepared and each canal was instrumented with a rotary ProTaper system. Read More

J Funct Biomater 2019 Feb 28;10(1). Epub 2019 Feb 28.

Institute of Operative Dentistry, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal.

Aim: The purpose of the present study is to assess the color stability of two calcium silicate-based cements (CSCs) used in regenerative endodontic procedures (REPs).

Methods: A total of 40 acrylic single-rooted transparent teeth, with immature apex, were used. Root canals were filled up to 3 mm below the level of the cementoenamel junction, with either saline solution (Mineral Trioxide Aggregate (MTA)/saline and Biodentine/saline) or blood (MTA/blood and Biodentine/blood). Read More

Photodiagnosis Photodyn Ther 2019 Feb 23. Epub 2019 Feb 23.

Department of Restorative Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Brazil. Electronic address:

Background: The literature has presented many studies regarding photodynamic antimicrobial therapy (aPDT). However, the great variety of protocols to be used can directly influence its effectiveness in reducing microorganisms. The aim of this randomized split-mouth clinical study was to evaluate the effect of aPDT in the reduction of Streptococcus mutans and their effect on restorations performed. Read More

Photodiagnosis Photodyn Ther 2019 Feb 20. Epub 2019 Feb 20.

Department of Preventive Dentistry & Public Oral Health, BK21 PLUS Project, Oral Science Research Institute, Yonsei University College of Dentistry, 120-752, 50 Yonsei-ro, Seodaemun-Gu, Seoul, Republic of Korea. Electronic address:

Introduction: A diagnosis based on traditional methods can differ under the same tooth condition. Additional diagnostic tools are required to overcome this limitation. QLF technology is a viable method for detecting residual caries and is increasingly being used to detect dentin-level residual caries. Read More

J Dent 2019 Apr 20;83:40-49. Epub 2019 Feb 20.

State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China. Electronic address:

Objective: To investigate the wear mechanisms and evolution of damage in tooth enamel-resin composite bonded interfaces caused by sliding contact, and to develop an understanding of interface degradation from a tribological viewpoint that supports clinical recommendations for improving interface integrity.

Methods: Reciprocating wear tests were performed on bonded interface samples involving commercial resin composite (Tetric N Ceram Bulk Fill), resin cement (Rely X U200) and tooth enamel using the ball-on-flat configuration. The bonded samples were subjected up to 5 × 10 cycles of sliding contact, and the wear depth and wear track morphology were characterized after increments using white light interferometry and scanning electron microscopy, respectively. Read More

Sensors (Basel) 2019 Feb 20;19(4). Epub 2019 Feb 20.

Department of Restorative Dentistry, University of Washington, Seattle, WA 98195, USA.

The mineral content of dental hard tissues has traditionally been measured by destructive tests such as transverse microradiography. Microfocus X-ray computed tomography (micro CT) has enabled non-destructive 3D assessment of tooth demineralization. This study compared the preventive effects of silver diammine fluoride (SDF) and potassium iodide (KI) in comparison with fluoride varnish. Read More

Clin Oral Investig 2019 Feb 20. Epub 2019 Feb 20.

Post-Graduate Program in Dentistry, School of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, CE, Brazil.

Objectives: The effect of ultrasonic agitation (UA) on bond strength and adaptation of cervical plugs prepared with MTA Angelus (MTA), MTA Repair HP (MTAHP), and Biodentine (BIO) was evaluated. Dentin discoloration caused by the materials/treatment was also assessed.

Materials And Methods: Seventy-two single rooted teeth were divided into six groups depending on the materials/treatment. Read More

Clin Oral Investig 2019 Apr 14;23(4):1499-1512. Epub 2019 Feb 14.

Department of Restorative Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M, Sala 64-A, Uvaranas, Ponta Grossa, Paraná, 84030-900, Brazil.

Objectives: A systematic review and a network meta-analysis were performed to answer the following research question: "Is there any light-activation protocol capable of improving color change efficacy when associated with an in-office bleaching gel in adults?"

Material And Methods: A search was performed in PubMed, Scopus, Web of Science, LILACS, BBO, Cochrane Library, and SIGLE without date and/or language restrictions in April 23, 2017 (updated on March 30, 2018). IADR abstracts (1990-2018), unpublished and ongoing trial registries, dissertations, and theses were also searched. Only randomized clinical trials conducted in adults that included at least one group treated with in-office dental bleaching with light activation were included. Read More

Dent Res J (Isfahan) 2019 Jan-Feb;16(1):53-59

Student Research Committee, Dental School, Kermanshah University of Medical Sciences, Kermanshah, Iran.

Background: This study sought to assess and compare coronal discoloration following the application of white mineral trioxide aggregate, Biodentine, and calcium-enriched mixture cement in endodontically treated teeth.

Materials And Methods: In this experimental study, 64 freshly extracted sound human premolars were selected, cleaned, and stored in saline. After cleaning, shaping, and obturation the root canal of the teeth, the teeth were randomly assigned to one control ( = 4) and three experimental ( = 20) groups. Read More

Wiad Lek 2018;71(9):1749-1752

Ukrainian Medical Stomatological Academy, Poltava, Ukraine.

Objective: Introduction: The use of ceramic veneers is one of the modern methods of correction of color changes in teeth. The effectiveness of treating dental discoloration with the use of veneers depends on their high-quality fixation on teeth. The aim of the research is to conduct a comparative assessment of the adhesion strength on offset when fixing veneers by various materials and methods. Read More

Cochrane Database Syst Rev 2019 02 5;2:CD006542. Epub 2019 Feb 5.

Department of Paediatric Dentistry, Leeds Dental Institute, Clarendon Way, Leeds, UK, LS2 9LU.

Background: Traumatic dental injuries are common. One of the most severe injuries is when a permanent tooth is knocked completely out of the mouth (avulsed). In most circumstances the tooth should be replanted as quickly as possible. Read More

Int J Paediatr Dent 2019 Feb 1. Epub 2019 Feb 1.

Department of Pediatric Dentistry, Faculty of Dentistry, Cukurova University, Adana, Turkey.

Background: The causes for intrinsic tooth discoloration can be separated into two categories as systemic and local. Systemic causes are either genetic or drug-induced effects. The development of dentition can also be affected by a number of systemic factors and metabolic diseases such as porphyria. Read More

MMWR Morb Mortal Wkly Rep 2019 Feb 1;68(4):87-90. Epub 2019 Feb 1.

Fluoride use is one of the main factors responsible for the decline in prevalence and severity of dental caries and cavities (tooth decay) in the United States (1). Brushing children's teeth is recommended when the first tooth erupts, as early as 6 months, and the first dental visit should occur no later than age 1 year (2-4). However, ingestion of too much fluoride while teeth are developing can result in visibly detectable changes in enamel structure such as discoloration and pitting (dental fluorosis) (1). Read More

BMC Oral Health 2019 Jan 29;19(1):26. Epub 2019 Jan 29.

State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.

Background: It is widely accepted that oral health plays an important role in overall health. Both dental and medical students are expected to possess good oral health awareness and work together for public oral health promotion especially in developing countries like China. The aim of this study was to assess the oral health knowledge, behavior and status of dental and medical undergraduate students in the first (fresh) and third year (before specialized courses) study. Read More

J Dent (Shiraz) 2018 Dec;19(4):280-286

Postgraduate Student, Dept. of Endodontics, School of Dentistry, Shiraz University of Medical Science, Shiraz, Iran.

Statement Of The Problem: The endodontically treated teeth usually suffer from the discoloration induced by endodontic materials, which can adversely affect the esthetical outcome of a treatment.

Purpose: This study aimed to compare the discoloration caused by the silver nanoparticles coated with imidazolium as an irrigant, sodium hypochlorite (NaOCl), and chlorhexidine gluconate (CHX).

Materials And Method: The root tips of 65 single-rooted human teeth were resected and root canal systems were chemomechanically prepared from the apical aspect. Read More

Int Endod J 2019 Jan 14. Epub 2019 Jan 14.

Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.

Aim: To compare the outcome of partial pulpotomy using two cements, ProRoot MTA (Dentsply, Tulsa Dental Specialties, Tulsa, OK, USA) and Biodentine (Septodont, Saint-Maur-des-Fossés, France), in permanent teeth of 6- to 18-year-old patients with signs and symptoms indicative of irreversible pulpitis. Furthermore, the frequencies of perceptible grey discoloration caused by the cements were compared.

Methodology: Sixty-nine permanent first molars with signs and symptoms indicative of irreversible pulpitis, from 69 patients, were included. Read More

Can J Anaesth 2019 Mar 9;66(3):328-330. Epub 2019 Jan 9.

Faculté de Médecine Dentaire, Université Laval, Quebec, QC, Canada.

Farm Hosp 2019 01 1;43(1):36-38. Epub 2019 Jan 1.

Servicio de Farmacia. Dirección General de Política Sanitaria. Consejería de Sanidad del Principado de Asturias, Oviedo, Asturias.

J Clin Exp Dent 2018 Nov 1;10(11):e1058-e1062. Epub 2018 Nov 1.

BDS, Postgraduate student, Department of orthodontics, JKK Nataraja dental college and hospital, Kumarapalayam.

Background: To assess the reversal of discolouration caused by Ledermix using various bleaching agents.

Material And Methods: Twenty six extracted human mandibular premolars were taken and divided into four groups. Six teeth were divided into three each which are taken as positive and negative controls. Read More

J Contemp Dent Pract 2018 Nov 1;19(11):1295-1300. Epub 2018 Nov 1.

Innovation and Development, ISDIN S.A., Barcelona, Spain, Phone: +34 932 402 020, e-mail:

Aims: Oral hygiene is key to prevent periodontal disease (PD). The efficacy of chlorhexidine-containing products has been largely proven, often being tooth discoloration an unwanted associated side-effect. Importantly, some differences related to the pharmaceutical presentation of these products have also been reported. Read More

PLoS One 2018 20;13(12):e0209330. Epub 2018 Dec 20.

Center for Microscopy and Imaging, Baylor University, Waco, Texas, United States of America.

Taphonomic analyses of bone-surface modifications can provide key insights into past biotic involvement with animal remains, as well as elucidate the context(s) of other biostratinomic (pre-burial) processes, diagenesis, excavation, preparation and storage. Such analyses, however, first require researchers to rigorously disambiguate between continuums of damage morphologies prior to attributing individual marks to specific actors and effectors (e.g. Read More

Quintessence Int 2018 Dec 18:2-12. Epub 2018 Dec 18.

Objectives: To test if cigarette smoke (CS) causes discoloration of enamel, dentin, and composite resin restorations and induces color mismatch between dental hard tissues and the restorations, and to compare the findings with the effects of aerosol generated by the tobacco heating system (THS) 2.2.

Method And Materials: Twenty-two human premolars were prepared with Class V cavities restored with Filtek Supreme Ultra (3M Espe) composite resin. Read More

Beijing Da Xue Xue Bao Yi Xue Ban 2018 Dec;50(6):1083-1087

Department of General, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.

Objective: To determine the optimum staining condition of tea solutions on bovine incisors in vitro, by comparing the color stability of tooth surface of different concentrations of tea solutions and methods on bovine incisors in vitro.

Methods: Twenty bovine incisors with color surface A1 were chosen, then randomly divided into 4 groups (n=10). Group 1: soaked with 2% tea solution continuously for 6 days; group 2: soaked with 2% tea solution for 6 days, but changed fresh tea solution everyday; group 3: soaked with 1% tea solution continuously for 6 days; group 4: soaked with 1% tea solution for 6 days but fresh tea solution changed every day. Read More

Braz Dent J 2018 Sep-Oct;29(5):409-418

Department of Dentistry, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.

This systematic review aimed to evaluate whether alternative materials to conventional triple antibiotic paste (TAP - metronidazole, ciprofloxacin, and minocycline) and grey mineral trioxide aggregate (GMTA) could avoid tooth discoloration in teeth submitted to Regenerative Endodontic Procedure (REP). It was also investigated if dental bleaching is able to reverse the color of darkened teeth due to REP. The search was conducted in four databases (Medline via PubMed, Scopus, ISI Web of Science and BVS - Virtual health library), following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Read More

Diagn Microbiol Infect Dis 2019 Mar 4;93(3):238-242. Epub 2018 Oct 4.

Infectious Diseases Division, Winthrop University Hospital, Mineola, NY.

Tetracycline antimicrobials entered into clinical usage in the late 1940s. Permanent dental staining from tetracyclines was first appreciated in 1956, eventually leading to avoidance of this class of antibiotics whenever possible in young children and pregnant or breastfeeding women. Doxycycline, introduced in 1967, binds calcium less avidly than prior tetracyclines and is regarded by some authorities as safe to prescribe for pregnant women and young children. Read More

Cien Saude Colet 2018 Nov;23(11):3957-3964

Faculdade de Odontologia, Universidade Federal do Rio Grande do Sul. R. Ramiro Barcelos 2492/3º, Rio Branco. 90035-003 Porto Alegre RS Brasil.

It aims to evaluate the association between dental appearance and Oral Health Related Quality of Life. Fifteen primary care services with dental services were selected in Porto Alegre, Brazil. Individuals were interviewed from a random sampling of households in the catchment area of the health centres. Read More

Int J Environ Res Public Health 2018 11 12;15(11). Epub 2018 Nov 12.

Dental Center, 29 Marasli Street, Kolonaki, GR10676 Athens, Greece.

The primary aim of this study was to examine the clinical performance of posterior monolithic single crowns in terms of failure or complications and the secondary aim was to assess the quality of these restorations according to the United States Public Health Service (USPHS) criteria. Ιn a private dental clinic, 65 patients with need of posterior crowns were restored with monolithic zirconia crowns. All the restorations were evaluated 6 and 12 months after their cementation. Read More

Niger J Clin Pract 2018 Nov;21(11):1484-1491

Department of Pediatric Dentistry, European University of Lefke Faculty of Dentistry, Lefke, Cyprus.

Context: In pediatric clinic practice, bulk fill composite is gaining importance for shortened clinical time with a limited shrinkage.

Aims: The present study evaluated the 1 year clinical performance of bulk fill composite and conventional composite material in occlusal caries of primary molars.

Settings And Design: The study was designed as randomized single blind clinical trial and a total of 160 restorations were placed in the cavities of the 80 patients. Read More

Shanghai Kou Qiang Yi Xue 2018 Jun;27(3):257-260

Shanghai Stomatological Disease Center. Shanghai 200031,China.

Purpose: The aim of this study was to compare if there was any difference in the enamel discoloration after staining when three orthodontic adhesives and 4 enamel clean-up methods were tested.

Methods: Three types of orthodontic adhesives were used: chemically cured resin, light-cured resin and resin-modified glass-ionomer cement. A total of 120 human extracted premolars were included. Read More

Int J Dent Hyg 2018 Oct 29. Epub 2018 Oct 29.

Department of Oral and Maxillo-Facial Sciences, "Sapienza" University of Rome, Rome, Italy.

Objectives: To compare 3 mouthwashes: 0.20% chlorhexidine (CHX) with Anti-Discoloration System (ADS), 0.20% CHX and 0. Read More

Braz Oral Res 2018 Oct 18;32(suppl 1):e75. Epub 2018 Oct 18.

Pontifícia Universidade Católica de Minas Gerais - PUC-MG, Department of Dentistry, Belo Horizonte, MG, Brazil.

Pulp canal obliteration (PCO) is a frequent finding associated with pulpal revascularization after luxation injuries of young permanent teeth. The underlying mechanisms of PCO are still unclear, and no experimental scientific evidence is available, except the results of a single histopathological study. The lack of sound knowledge concerning this process gives rise to controversies, including the most suitable denomination. Read More

Pediatr Dent 2018 Jul;40(4):253-258

Department of Developmental Dentistry, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA.

The purpose of this study was to evaluate the clinical success of a new primary zirconia molar crown compared with stainless steel crowns (SSCs). This randomized, controlled clinical trial was designed as a split-mouth study. Fifty three- to seven-year-old children were recruited to provide a total of 50 pairs of teeth requiring primary molar crowns, with each participant receiving a SSC and zirconia crown. Read More

Clin Oral Investig 2018 Oct 17. Epub 2018 Oct 17.

Department of Preventive Dentistry, School of Dentistry, Kyungpook National University, 2177, Dalgubeol-daero, Jung-gu, Daegu, 41940, Republic of Korea.

Objectives: To evaluate the efficacy of a brush-off patch containing 3.0% hydrogen peroxide, which is a new over-the-counter (OTC) product for tooth whitening, and determine the optimal protocol for use.

Materials And Methods: We performed an in vitro study using hydroxyapatite specimens and a clinical trial involving 140 volunteers. Read More

J Indian Soc Pedod Prev Dent 2018 Oct-Dec;36(4):402-406

Department of Pedodontics and Preventive Dentistry, Dr. D.Y Patil Vidyapeeth, Pune, Maharashtra, India.

Objective: The objective of this study is to evaluate the effect of chlorhexidine on the outcome of pit and fissure sealant (PFS) in permanent molars.

Methods: A double-blind randomized controlled trial using split-mouth design was conducted for a period of 1 year. The clinical trial registry was done in the Indian Council of Medical Research, and the clinical trial number obtained was CTRI/2016/08/007222. Read More

J Clin Exp Dent 2018 Aug 1;10(8):e815-e820. Epub 2018 Aug 1.

DDS, MSc, PhD, Professor, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.

Background: To establish the correlation between enamel roughness and color change of tooth.

Material And Methods: Enamel/dentin blocks (5 x 5 x 3.2 mm) were serially ground with the following abrasive paper: 1200-grit, 800-grit, and 600-grit SiC papers. Read More

Dental Press J Orthod 2018 Aug 1;23(4):36-42. Epub 2018 Aug 1.

Centro Universitário de Adamantina (Adamantina/SP, Brasil).

To biologically explain why the orthodontic treatment does not induce pulp necrosis and calcific metamorphosis of the pulp, this paper presents explanations based on pulp physiology, microscopy and pathology, and especially the cell and tissue phenomena that characterize the induced tooth movement. The final reflections are as follows: 1) the orthodontic movement does not induce pulp necrosis or calcific metamorphosis of the pulp; 2) there is no literature or experimental and clinical models to demonstrate or minimally evidence pulp alterations induced by orthodontic movement; 3) when pulp necrosis or calcific metamorphosis of the pulp is diagnosed during orthodontic treatment or soon after removal of orthodontic appliances, its etiology should be assigned to concussion dental trauma, rather than to orthodontic treatment; 4) the two pulp disorders that cause tooth discoloration in apparently healthy teeth are the aseptic pulp necrosis and calcific metamorphosis of the pulp, both only induced by dental trauma; 5) the concussion dental trauma still requires many clinical and laboratory studies with pertinent experimental models, to increasingly explain its effects on the periodontal and pulp tissues. Read More

J Conserv Dent 2018 Sep-Oct;21(5):562-568

Faculty of Dentistry, SEGi University, Selangor, Malaysia.

Introduction: Among the various causes of tooth discoloration after root canal treatment, percolation of sealer remnants into the dentinal tubules of the pulp chamber is the most common cause.

Objectives: The aim of this study is to evaluate the efficacy of dentin bonding agent (DBA) in preventing coronal discoloration caused by four different root canal sealers- MTA Fillapex, Sealapex, Zical and Z. O. Read More

Clin Oral Investig 2018 Oct 6. Epub 2018 Oct 6.

Faculty of Dentistry, Department of Restorative Dentistry, Çanakkale Onsekizmart University, Çanakkale, Turkey.

Objectives: This study compared the 3-year clinical performance of a low-shrinkage silorane-based composite material with that of a methacrylate-based composite material in the restoration of endodontically treated premolar teeth.

Materials And Methods: A total of 70 patients requiring a Class II composite-resin restoration of a premolar tooth following root-canal treatment participated in the study. Cavities were restored with either a silorane-based restorative (Filtek Silorane + Silorane System Adhesive) or a methacrylate-based restorative (Filtek Z250 + Clearfil SE Bond) system applied according to the manufacturer's instructions. Read More

Case Rep Dent 2018 6;2018:4601795. Epub 2018 Sep 6.

Kırıkkale University Faculty of Dentistry, Department of Restorative Dentistry, Turkey.

Dental aesthetics have become highly important in recent years. Treating aesthetic demands with noninvasive or minimally invasive techniques can preserve the natural tissues. A 20-year-old female patient presented to the clinic with aesthetic concerns. Read More

Clin Oral Investig 2018 Sep 27. Epub 2018 Sep 27.

Department of Endodontics, Faculty of Dentistry, Gazi University, Emek mah. 1. sok No: 4, 06510, Ankara, Turkey.

Objectives: The aim of this study was to evaluate the tooth crown discoloration induced by commonly used and new-generation endodontic sealers after 1 month and 1 and 3 years.

Materials And Methods: The crowns of 60 extracted incisors were cut and the pulp chambers were cleaned. The specimens were divided randomly into four groups (n = 15 each). Read More

Dent Res J (Isfahan) 2018 Sep-Oct;15(5):367-371

Department of Prosthodontics, Faculty of Dentistry, Ardabil University of Medical Sciences, Ardabil, Iran.

Background: Iron supplement is recommended for alleviating iron deficiency. Black discoloration of teeth is one of the side effects of consumption of iron supplements. Besides these effects, iron drops may also act directly on the dental hard tissues, with erosive lesions as possible outcomes of their content. Read More

Forensic Sci Int 2018 Oct 18;291:e8-e12. Epub 2018 Aug 18.

Department of Forensic Anthropology and Odontology, Scientific State Police, Goiania, Brazil; Department of Forensic Odontology, Federal University of Goias, Goiania, Brazil.

Forensic thanatology comprises the investigation of every phenomenon related to death performed through cadaveric exams. The pink tooth phenomenon (PTP) emerges as a thanatological finding registered during medical or dental autopsy. The PTP consists of a reddish or pink coloration caused in the teeth by the penetration of pulpal hemoglobin in the dentinal tubules. Read More

Niger J Clin Pract 2018 Sep;21(9):1093-1097

Private Practice, Ankara, Turkey.

Objectives: The objective of the study is to evaluate the effects of repeated bracket bonding on the color changes of tooth enamel after in vitro coloration.

Materials And Methods: Eighty-one premolars were equally divided into three groups. Samples in Group 1 (G1) represented nonorthodontic treatment patients, and the enamel surfaces were left intact. Read More

Dent Med Probl 2018 Apr-Jun;55(2):167-171

Department of Dental Prosthetics, Faculty of Dentistry, Wroclaw Medical University, Poland.

Background: Prosthetic treatment restores proper chewing function and facial aesthetics, and enhances the quality of life. The overall aesthetic result of the use of removable prostheses is correlated with the type of artificial teeth used and with the maintenance of aesthetic effect and color stability.

Objectives: The aim of the study was to evaluate the formation and intensity of discoloration caused by the dyes present in selected 5-layer acrylic teeth. Read More

J Prosthet Dent 2019 Feb 20;121(2):340-346. Epub 2018 Aug 20.

Associate Professor, Department of Restorative Dental Sciences, Division of Prosthodontics, College of Dentistry, University of Florida, Gainesville, Fla. Electronic address:

Statement Of Problem: Whether tooth whitening alters the surface topography of enamel causing an increase in surface roughness that could increase susceptibility to restaining is unclear.

Purpose: The purpose of this in vitro study was to evaluate whether immersing enamel in common solutions produces a color change of ΔE greater than 2; whether the highest concentration carbamide peroxide bleaching agent produces the greatest ΔE; whether bleaching increases the susceptibility to further staining by common solutions; and whether morphologic changes to the enamel surface are observed after staining and bleaching as evidenced by scanning electron microscopy (SEM) analysis and energy-dispersive X-ray spectroscopy (EDS).

Material And Methods: Forty-five extracted human teeth were immersed in 5 solutions (wine, coffee, tea, soda, and water) for 15 days at 80°C, and the change in ΔE was assessed with a colorimeter. Read More