Dental Materials Commons^™

The Effect Of Crowding On The Accuracy Of 3d Printed Aligners, Tonya Spangler

Theses and Dissertations

Purpose: To evaluate the accuracy of three-dimensionally (3D) printed aligners compared to conventional vacuum-formed thermoplastic aligners with varying levels of dental crowding.

Methods: Digital intraoral scans of 10 different cases were assigned to their respective groups (n=10, each, 30 total) as follows: no crowding (control), moderate crowding, and severe crowding. Using 3Shape software, digital aligner samples were created in standard tessellation language (STL) file format and randomly 3D printed. The same STL files of each case were also sent to a dental laboratory for the fabrication of vacuum-formed samples, which is the current technology used for manufacturing aligners. The intaglio …

The Observation Of Relative Occlusal Forces Of Posterior Implant-Supported Fixed Prostheses In Tooth-Borne And Distal End Circumstance By Using T-Scan System : A Prospective Study, Jinjudhapak Thongdee

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objectives: to assess the relative occlusal forces (ROF) of posterior implants in two different occlusion designs in tooth-borne and distal end circumstances over time using the T-scan system and to compare the marginal bone loss in those situations and designs over time. Material and methods: Twenty patients requiring single posterior or distal end implants were randomly assigned to two groups: Implant-protected occlusion (IPO) or load (LOAD). The ROFs were measured using a T-scan on five occasions. Custom-made jigs were used to collect periapical parallel x-rays. The implant platforms were used as a reference to assess marginal bone loss. Results: In …

A Comparison Of Shear Bond Strength On Human Dentin Using Acrylic Resin Cement And Self-Adhesive Resin Cements With The Use Of Universal Adhesives, Phatcha Maiwatana

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: To evaluate the shear bond strength of human dentin with two different phosphate-monomer containing self-adhesive resin cements, an acrylic resin cement, and the effect of universal adhesive pretreatment on human dentin. Materials and Methods: Fifty extracted human third molars with the superficial dentin exposure at the buccal side were prepared. Resin composite cylinders with 2.38 mm diameter were cemented with 5 groups of resin cements and universal adhesives: Rely X U200, Single Bond Universal Adhesive with Rely X U200, Panavia SA Luting Multi, Clearfil Tri-S Bond Universal Quick with Panavia SA Luting Multi, and Super Bond C&B. Then, the …

Two-Body Wear Resistance Of Four Different Lithium Disilicate, One Zirconia Reinforced Lithium Silicate, And Two Zirconia Cad/Cam Materials, Suchaya Tantrachoti

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: to evaluate the volume loss of four different lithium disilicate, one zirconia reinforced lithium silicate, and two zirconia CAD/CAM materials. Methodology: The test conditions were divided into 8 experimental groups (n=6); Amber mill (AM), milled-Celtra Duo (mCD), fired-Celtra Duo (fCD), IPS emax CAD (EM), n!ce (NI), Rosetta SM (RS), Cercon xt (XT), and IPS emax ZirCAD (ZC). Flat square specimens (8 x8 x4 mm3) were prepared. A spherical steatite (D =6mm) was used as an antagonist. The simulated two-body wear was performed using a chewing simulator (120,000 cycles, 50 N, 1.34 Hz, sliding movement 0.5 mm). The volume loss …

Management Of Severe Dento-Alveolar Traumatic Injuries In A 9-Year Old Boy: A Case Report, Elnaz Mousavi, Masoomeh Khoshdel, Hamidreza Sharifiyan

Journal of Dentistry Indonesia

Dentoalveolar traumas can lead to various injuries that may result in tooth loss. A suitable treatment plan and appropriate interventions should be performed to maintain the dental function and aesthetics, especially for the anterior teeth. Objective: To report the interventions performed on dentoalveolar trauma on a 9-years old male patient who presented with gingival immersion of the right maxillary central incisor and missing a tooth due to a falling accident. Case Report: The patient had multiple traumatic injuries. The medical and dental history was taken, and the clinical and radiologic examinations were performed. The patient underwent surgical intervention and splinting …

Antibacterial And Antibiofilm Efficacy Of Pineapple Hump (Ananas Comosus) On Porphyromonas Gingivalis In Vitro, Abdul Gani Soulissa, Billy Lombardo, Armelia Sari Widyarman

Journal of Dentistry Indonesia

Background: Periodontal disease is one of the most prevalent oral health problems in Indonesia that affects supporting tissues of the teeth. Porphyromonas gingivalis plays an important role in the pathogenesis of periodontal disease. Alternative therapy with natural plant extracts, including pineapple (Ananas comosus) hump extract may inhibit the growth of bacteria that cause periodontal disease. Objective: To determine the effect of pineapple hump extract on bacterial growth and adhesion of Porphyromonas gingivalis biofilms. Method: The bacterial inhibition test was performed by the agar well diffusion method, and biofilm density measurements were made using the biofilm assay method. Results: Pineapple hump …

Comparison Of Surface Roughness And Microhardness Of Reinforced Glass Ionomer Cements And Microhybrid Composite, Seda Nur Karakaş, Hacer Turgut, Cihan Küden

Journal of Dentistry Indonesia

Objectives: The purpose of this study was to compare high viscosity glass ionomer cement (HVGIC), giomer and microhybrid composite using the atomic force microscopy (AFM) and Vickers microhardness. Methods: Three different restorative materials Equia Forte (HVGIC), Beautifil II (giomer) and Solare X (microhybrid composite) were used in this study. A total of 30 samples were prepared, 10 of each of the restorative materials used in our study. Samples were prepared using standard cylindrical Teflon molds with a diameter of 8 mm and a height of 2 mm. The measurements of surface roughness and hardness were performed by using AFM and …

Effects Of Different Finishing Procedures On Surface Roughness Of Hybrid Cad/Cam Materials, Ender Akan, Ozlem Colgecen, Ibrahim Talha Meşe, Bora Bağiş

Journal of Dentistry Indonesia

Hybrid ceramics combine the beneficial properties of resin with the advantage of glass ceramics. However, there are limited study about on roughness properties of hybrid materials. Objective: To investigate of the effects of surface finishing methods on roughness of dental restorations made from hybrid CAD/CAM blocks. Methods: A total of 60 samples were produced (n=20) for three main material groups, two different hybrid ceramic (LAVA Ultimate and VITA Enamic) and a conventional glass ceramic (IPS e.max CAD). Each material group was divided into two subgroups (n=10). Ten samples were polished and 10 were glazed according to related manufacturer instructions. Surface …

Comparative Analysis Of 3d Printed Denture Resins With Traditional Denture Materials At The Micro Level, Aneeza Hussain, Caleb Beckwith, Gaffar Gailani

Publications and Research

The aim of this experiment was to evaluate and identify compression strength between traditionally manufactured acrylic dentures and additive manufacturing resin dentures. Specifically, the dentures produced by Uhler Dental, its Reveal line were compared against samples produced on the Formlabs Form 2 SLA, Stereolithography, 3D printer using their Denture Teeth A2 resin to test compression strength to assure they are compatible with the occlusal forces in the oral cavity. Using the ZwickRoell tensile testing machine, it appeared that the acrylic dentures were half as strong as the resin dentures. Then we went ahead to and did a comparative analysis under …

A Comparison Between The Effect Of Different Pressures Of Air Particle Abrasion Before And After Sintering With And Without Zirconia Liner On Bond Strength Of Resin To Zirconia Surface, Lina Mohamad Saadeh, Ehab A. Farghaly, Mohammad M. Rayyan, Essam Osman

BAU Journal - Creative Sustainable Development

This study aimed to compare the effect of different pressures of air particle abrasion 2 and 4 bars before and after sintering with and without zirconia liner on SBS of resin to zirconia Surface. Materials and Methods: 54 zirconia cuboids 8×8×3 mm were milled and divided into 6 equal groups (N=9) according to surface treatment; sintered with ceramic liner application and 2 bars pressure (SL2) and with 4 bars pressure (SL4), sintered with no ceramic liner and 2 bars pressure (SN2) and 4 bars pressure (SN4), unsintered with no ceramic liner and 2 bars pressure (UN2) and 4 bars pressure …

Interrelationship Between Orthodontics And Implantology In Anterior Aesthetic Rehabilitation: A Case Report, Adailton De Morais Cavalcante, Renata Cordeiro Teixeira Medeiros, Danilo Lopes Ferreira Lima, Saulo Ellery Santos

Journal of Dentistry Indonesia

The rehabilitation of complex cases in the anterior region of the maxilla may require knowledge of several dental specialties. when dental involvement also causes bone and gingival involvement, management usually requires adjustment of gingival zenitis and bone graft to compensate for bone loss.

Objective: to discuss a case of previous orthodontic treatment for implant-prosthetic rehabilitation in the anterior region.

Case report: This case report describes a 40-year-old patient who came with the intention of extracting the tooth and installing a bridge. The implant-prosthetic treatment was performed after previous orthodontic treatment to adapt the gingiva and space.

Conclusion: The interrelationship of …

Comparison Of Shaping Ability Between Continuous Rotary And Manual Instrumentations In Pediatric Endodontics, Burcu Güçyetmez Topal, Seda Falakaloğlu, Hatice Türkoğlu

Journal of Dentistry Indonesia

Objective: The aim of this in vitro study was to evaluate the efficacy of rotary EndoArt Ni-Ti Gold Pedo Kit and K-files in shaping ability, canal transportation, centering ability and instrumentation time in primary molars.

Methods: For the study total of 30 extracted primary molars root with minimum 7mm root length were selected. Shaping of root canals in primary molars were done using the two systems, and CBCT and specialized software were used for scanning and analysis of pre-operative and post-operative to evaluate the groups for their shaping properties, apical transportation and preparation time in primary root canals.

Results: No …

Evaluation Of The Relationship Between Sella Turcica Bridging And Dental Anomalies, Ahmet Karaman, Saadet Cinarsoy Cigerim Assistant Professor, Nourtzan Kechagia Research Assistant

Journal of Dentistry Indonesia

Objectives: This study aims to evaluate the relationship between the morphological variations of Sella Turcica (ST) and dental anomalies.

Methods: This study included 765 individuals between the ages of 13 and 35. ST morphology was examined in 3 groups as no calcification, partially calcified and completely calcified according to the interclinoid ligament (ICL) on lateral cephalometric films, and it was examined and evaluated in terms of its relationship to impacted canines (unilateral and bilateral), impacted teeth (except 3rd molars), root dilaceration, tooth deficiency (upper incisor lateral - lower and upper second premolar), supernumerary tooth and taurodontism.

Results: The rates of …

Approaches Of General And Specialist Dentists To Deep Caries Management: A Cross-Sectional Study From Turkey, Ebru Delikan, Ayşe Tuğba Ertürk-Avunduk, Seçkin Aksu

Journal of Dentistry Indonesia

Objective: To determine the differences in treatment strategies and material preferences for deep dentine carious lesions (DDCLs) management among general and specialist dentists.

Methods: Dentists working in universities, oral and dental health centers, or private practice were administered a 14-item web-based questionnaire regarding demographic and occupational characteristics, approaches to DDLCs, pulp capping methods, and preferences for restorative materials. The data were examined using descriptive statistical analysis and Pearson’s chi-square tests.

Results: The study enrolled 298 general and 265 specialist dentists among whom 67.1% were female and 73.3% were aged 25 to 35 years. Total excavation and permanent restoration of DDCLs …

Effect Of Natural And Industrial Juices On Surface Microhardness Of Microhybrid And Nanohybrid Composites, Razieh Meshki, Hanieh Hoseini

Journal of Dentistry Indonesia

Numerous studies have been conducted on the effect of various beverages on the mechanical properties of tooth-colored materials, however, little is known about the effects of these materials on composites, particularly newer types such as nanocomposites.

Objectives: This study aimed to evaluate the surface microhardness of two types of composites, micro-hybrid (point 4) and nanohybrid (premise), after exposure to natural and industrial juices.

Methods: In this experimental study, 90 disc-shaped specimens with a thickness of 2 mm and a diameter of 10 mm were taken from two composites, micro-hybrid Point4 (Kerr) and nanohybrid premise (kerr) (two groups of 45). Then, …

J Mich Dent Assoc August 2021

The Journal of the Michigan Dental Association

Every month, The Journal of the Michigan Dental Association brings news, information, and features about Michigan dentistry to our state's oral health community and the MDA's 6,200+ members. No publication reaches more Michigan dentists!

In this issue, the reader will find the following original content:

• A cover story on “Diversity, Equity, Inclusion, and Dentistry: Understanding the MDA’s Perspective”.
• A feature article, “Diversity, Equity, Inclusion, and Dentistry: Its Impact on Oral Health — You Can Make a Difference!”.
• A feature article from the Journal’s DEI series, “Welcoming Diversity, Equity, and Inclusion with Students Considering Careers in Dentistry”.
• A feature clinical article …

Evaluation Of Mucograft® In Increasing The Peri-Implant Soft Tissue Thickness In The Esthetic Zone., Sarah Gamal Moussa, Nivine Ibrahim Ragy, Khaled Abdel Ghaffar

Future Dental Journal

Objective: To study the effect of Collagen matrix Mucograft (CM) in enhancing the soft tissue thickness around immediate implants (II) in comparison to palatal connective tissue grafts (SCTG).

Subjects & methods: This randomized, controlled clinical trial included 16 patients, who were randomly divided into test (IIP +CM) and control (IIP+SCTG) groups. Clinical parameters evaluated at baseline, 3-months, and 6-months were papillary bleeding index (PBI), gingival index (GI), facial probing depth (FPD), palatal probing depth (PPD). Direct measurements of gingival thickness were evaluated at baseline and 6-months follow up. Pink esthetic score (PES) and white esthetic score (WES) were evaluated at …

Effect Of Different Surface Treatments On Bond Strength To Tetragonal And Cubic Zirconia, Mohamed Mahmoud Abdelnaby, Moustafa Nabil Aboushelib, Ossama Saleh Abdelghany, Amr El-Etreby

Future Dental Journal

Background: Dental zirconia has been widely used due to its superior mechanical properties. However, traditional etching techniques and surface treatments are generally ineffective on zirconia surfaces due to its inertness and lack of a silica phase. Hence, various surface treatments are applied to improve bonding to zirconia.

Objectives: The aim of this study was to evaluate the effect of three different surface treatments: low pressure air borne particle abrasion, selective infiltration etching and fusion sputtering on bond strength to both Tetragonal zirconia and Cubic zirconia.

Materials and Methods: Ninety two specimens of zirconia were used in this study. Two of …

Evaluation Of Dentin Micro-Hardness And Antibacterial Efficiency Against E.Faecalis After Irrigation With Sodium Hypochlorite Followed By Either Grape Seed Extract Or Edta: A Randomized In -Vitro Study, Yasmeen S. Mahmoud, Dalia A. Saba, Taheya A. Moussa

Future Dental Journal

Objectives: Evaluation of dentin micro-hardness, dentinal erosion and antibacterial efficiency against E.faecalis after irrigation with sodium hypochlorite (NaOCl) followed by grape seed extract (GSE)solution versus irrigation with NaOCl followed by EDTA.

Materials and Methods: Regarding dentin micro-hardness test; 16 teeth were divided into 2 groups; intervention (5.25%NaOCl+13%GSE) and comparator (5.25%NaOCl+17%EDTA) groups. Each tooth was decoronated and sectioned vertically. Dentin microhardness was evaluated before and after irrigation at the coronal, middle and apical thirds. Representative specimens from the micro-hardness test were used for dentin surface examination using scanning electron microscope (SEM). For the evaluation of the antibacterial efficiency, 18 teeth were …

Maintaining Root Canal Curvatures After Preparation With Different Nickel-Titanium Rotary Systems (A Comparative In Vitro Study), Wael Betbout, Mohammad Al Shammaa, Roula S. Abiad

BAU Journal - Creative Sustainable Development

The ongoing advancement of materials and methods for root canal instrumentation is resulting in improved techniques with minimal variations to the canal morphology. One standard for assessment of the shaping quality of curved root canals is preparation-induced straightening of the canal. The aim of the study: To compare the effects of 2 Nickel-Titanium rotary systems, 2Shape (Micro-Mega, Besançon, France) and ProTaper Next (Dentsply,Sirona, Ballaigues, Switzerland), on maintaining the distobuccal canals curvature of extracted human maxillary molar teeth using periapical radiographs. Materials and methods: In this study a total of 26 distobuccal roots of upper maxillary molars were used and divided …