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Articles 1 - 30 of 907
Full-Text Articles in Medicine and Health Sciences
Comparison Of Resistance To Sliding In Posterior Units With Various Angulations Of Molar Tubes, Pornhathai Liewsaitong, Paiboon Techalertpaisarn
Comparison Of Resistance To Sliding In Posterior Units With Various Angulations Of Molar Tubes, Pornhathai Liewsaitong, Paiboon Techalertpaisarn
Chulalongkorn University Dental Journal
Background/objectives This study aimed to investigate the effect of one or two brackets on orthodontic frictional forces and to compare frictional forces of posterior segments when a molar tube had different degrees of tipping. Materials and Methods Five different types of posterior segment templates with six templates per type were constructed. Templates A and B had one and two brackets with an untipped tube, respectively. Templates C, D, and E had two brackets and a 3°, 6° or 9° tipped tube. Each template was coupled with 0.016″ x 0.022″ stainless steel wire and ligated with elastomeric ligatures. Static frictions were …
Microtensile Bond Strength Between Zirconia Ceramics To Resin Composite Using Different Resin Cements, Putsadee Srisomboonkamon, Prarom Salimee
Microtensile Bond Strength Between Zirconia Ceramics To Resin Composite Using Different Resin Cements, Putsadee Srisomboonkamon, Prarom Salimee
Chulalongkorn University Dental Journal
Background/Objective: This study aimed to evaluate the microtensile bond strength (MTBS) of three zirconia ceramics from different manufacturers bonded to resin composite using three different resin cements. Materials and methods: Three fully-sintered zirconia ceramic blocks (5x5x10 mm) from Katana (Nuvodent, Japan), Lava (3M ESPE, Germany) and Cercon (Degudent, Germany) were fabricated and bonded to resin composite blocks (Filtek Z250, 3M ESPE, USA) with the same size using one of the three resin cements : Panavia F 2.0 (Kuraray, USA), Superbond C&B (Sun Medical, Japan) and RelyX Unicem (3M ESPE, USA). After 24 h, each block was cut under water coolant …
The Comparison Of The Surface Roughness And Surface Morphology Of Sintered And Chairside Polished Monolithic Zirconia Implant Crown, Wasan Vatanasak, Kamolporn Wattanasirmkit
The Comparison Of The Surface Roughness And Surface Morphology Of Sintered And Chairside Polished Monolithic Zirconia Implant Crown, Wasan Vatanasak, Kamolporn Wattanasirmkit
Chulalongkorn University Dental Journal
Background: Low temperature degradation, also known as ageing, is the major challenge we cannot avoid in zirconia restorations. Changes in temperature, pressure, mechanical force and moisture are few of the factors which contribute to ageing which eventually leads to failure of zirconia restorations. Objectives: To compare the phase transformation, surface roughness and grain morphology as indications of low temperature degradation that might occur in translucent monolithic zirconia after try in procedure which finished the restoration by chairside polishing or annealing technique. Materials and methods: A total of 10 single implant crowns would be milled from the one Vita HT (VITA-Zahnfabrik, …
The Outcome Of Endodontic Treatment Performed By Dental Students: A Retrospective Study, Phonphanit Sivavetpikul, Kessiri Wisithphrom, Peraya Puapichartdumrong
The Outcome Of Endodontic Treatment Performed By Dental Students: A Retrospective Study, Phonphanit Sivavetpikul, Kessiri Wisithphrom, Peraya Puapichartdumrong
Chulalongkorn University Dental Journal
Background/Objectives: The objectives of this study were to evaluate the success and failure rates as well as factors influencing the outcome of initial endodontic treatment performed by dental students at the Faculty of Dentistry, Naresuan University, Thailand, from 2010 to 2015. Materials and Methods: Data from the treatment records, clinical signs and symptoms, and radiographic records of 213 endodontically treated anterior teeth and premolar were collected and evaluated. Digital periapical radiographs obtained at pre-operation and the last follow-up period were interpreted independently by two examiners via Periapical index (PAI) score. Treatment outcome was evaluated as success or failure based on …
Review Of Literatures: Importance Of Vitamin D In Dentistry, Wareeratn Chengprapakorn
Review Of Literatures: Importance Of Vitamin D In Dentistry, Wareeratn Chengprapakorn
Chulalongkorn University Dental Journal
This article is aimed to review of literatures on vitamin D roles in overall health and its effects in dentistry, particularly, periodontal disease, orthodontics tooth movement, dental implant osseointegration and also osteonecrosis of the jaw. On account of new insights of vitamin D implication in immune response. This article will also focus on vitamin D effects on oral response to various dental procedures.
Fracture Resistance Of Endodontically Treated Maxillary Premolars Restored With Lithium Disilicate Restorations Using Three Different Retentive Techniques, Pakwan Varapongsittikul, Top Chitkraisorn, Nichamon Chaianant, Terawat Tosiriwatanapong, Boonsong Prateepsawangwong
Fracture Resistance Of Endodontically Treated Maxillary Premolars Restored With Lithium Disilicate Restorations Using Three Different Retentive Techniques, Pakwan Varapongsittikul, Top Chitkraisorn, Nichamon Chaianant, Terawat Tosiriwatanapong, Boonsong Prateepsawangwong
Chulalongkorn University Dental Journal
To compare fracture resistance of endodontically treated maxillary premolars restored with ceramic restorations using three retentive techniques. Forty maxillary premolars were randomly selected as a control (Group 1), composite core/crown (Group 2), fiber-reinforced composite post/ composite core/crown (Group 3) and endocrown (Group 4). All restorations were thermo-cycled and subjected to vertical loading. Fracture load and fracture modes were analyzed. The results showed that Group 3 recorded a significantly highest fracture load (2304 ± 737 N). Pairwise comparisons showed no significant difference between Group 2 (1229 ± 303 N) and group 4 (1609 ± 395 N). Type of coronal-radicular retention was …
Painting-On Topical Fluoride Gel Markedly Reduces The Fluoride Gel Amount Compared With Tray Application, Kamonwan Sriwongchai, Wacharaporn Tasachan, Kasekarn Kasevayuth, Chutima Trairatvorakul
Painting-On Topical Fluoride Gel Markedly Reduces The Fluoride Gel Amount Compared With Tray Application, Kamonwan Sriwongchai, Wacharaporn Tasachan, Kasekarn Kasevayuth, Chutima Trairatvorakul
Chulalongkorn University Dental Journal
Background/objectives: Professional topical fluoride (F) gel application has been used to prevent dental caries with a concern about safety in young children. The aim of this study is to evaluate a paint-on technique using a No. 8 paint brush for applying professional topical F gel as an alternative method in children at a safer, lower dose compared with a tray. Materials and Methods: Twenty-one healthy children (12-15-year-old) participated in this clinical crossover study. The amounts of F gel used were 0.4 ml in the paint-on or 5.0 ml in the tray. Saliva and interproximal fluid were collected before, and immediately, …
Pharyngeal Airway Space Changes In Thai Mandibular Setback Patients, Chavanya Asavalertpalakorn, Thitapa Lelapityamit, Natawan Piriyakulkit, Phonkit Sinpitaksakul, Kevin A. Tompkins, Kanit Dhanesuan
Pharyngeal Airway Space Changes In Thai Mandibular Setback Patients, Chavanya Asavalertpalakorn, Thitapa Lelapityamit, Natawan Piriyakulkit, Phonkit Sinpitaksakul, Kevin A. Tompkins, Kanit Dhanesuan
Chulalongkorn University Dental Journal
Background/Objective: The aims of this study were to determine the mean pharyngeal airway space (PAS) area before and after mandibular setback surgery with Bilateral Sagittal Split Ramus Osteotomy (BSSRO) in class III skeletal deformity patients and to identify the correlation between the amount of mandibular setback and PAS change. Materials and Methods: Thirty-two patients who had undergone mandibular setback surgery with BSSRO at the Department of Oral Surgery, Faculty of Dentistry, Chulalongkorn University (Bangkok, Thailand) from January 2010-December 2015 were included in this study. The PAS areas were measured from lateral cephalometric radiographs preoperatively (T0), immediately postoperatively (TPO), 6 months …
Quality Of Life In Patients Prescribed Vitamin B1-6-12 For Treatment Of Sensory Impairment Related-Mandibular Orthognathic Surgery, Kamolratanakul Paksinee, Ruxwongkana Taya, Kraisittisirikul Gun, Trising Worawee, Subbalekha Keskanya
Quality Of Life In Patients Prescribed Vitamin B1-6-12 For Treatment Of Sensory Impairment Related-Mandibular Orthognathic Surgery, Kamolratanakul Paksinee, Ruxwongkana Taya, Kraisittisirikul Gun, Trising Worawee, Subbalekha Keskanya
Chulalongkorn University Dental Journal
Background/objective: One of the most common complication in orthognathic surgery is inferior alveolar nerve injury, resulting in sensory impairment that affects patientûs daily life. Many studies reported the potential of vitamin B on nerve regeneration. No clinical study showed the effect of vitamin B1-6-12 on the quality of life. Therefore, we aim to evaluate the effect of vitamin B on oral health related quality of life in post-orthognathic surgical nerve injury. Materials and methods: A prospective, randomized, double blinded trial study were performed in thirty two patients who had undergone mandibular orthognathic surgery with Bilateral Sagittal Split Osteotomy procedure were …
Update On Surgical Approach In Accelerating Orthodontic Tooth Movement: A Concise Review, Arthessarat Sirisa-Ard
Update On Surgical Approach In Accelerating Orthodontic Tooth Movement: A Concise Review, Arthessarat Sirisa-Ard
Chulalongkorn University Dental Journal
The orthodontic treatment is a time-consuming procedure. Fixed orthodontic treatment usually takes 2-3 years, with several regular follow up appointments, depending on various factors such as severity of the malocclusion, treatment planning, and patient compliance. The prolong treatment could increase more complications such as caries and root resorptions. A patient burnout also could happen because of this long term exhausted procedure. Thus, to be able to shorten the orthodontic treatment duration will be highly desirable for both patients and orthodontists. Up to now, several treatment modalities have been reported to accelerate orthodontic tooth movement including biomechanical, biological, physical/mechanical, and surgical …
Efficacy Of Self-Ligating Vs Conventional Fixed Orthodontic Appliance System: An Update, Arthessarat Sirisa-Ard
Efficacy Of Self-Ligating Vs Conventional Fixed Orthodontic Appliance System: An Update, Arthessarat Sirisa-Ard
Chulalongkorn University Dental Journal
The conventional fixed orthodontic appliances have been used to treat number of patients effectively for a long time. However, the popularity of using self-ligating brackets has increased considerably over the last few years. Many advantages of using self-ligating brackets have proposed. These include minimized applied force from the appliance with reduced friction, favorable physiologic tooth movement, less treatment time, longer treatment intervals with fewer appointments, chair time saving, less patient discomfort, improved oral hygiene, etc. However, self-ligating brackets cost higher than conventional appliances. They also have more bulky profile due to their complicated mechanical design and their clip or slide …
Current Perspectives On Ceramic Post And Core Systems, Top Chitkraisorn, Terawat Tosiriwatanapong
Current Perspectives On Ceramic Post And Core Systems, Top Chitkraisorn, Terawat Tosiriwatanapong
Chulalongkorn University Dental Journal
In spite of a large number of in-vitro and in-vivo reports, it is still unclear regarding the ideal restoration of endodontically treated teeth, which requires comprehensive knowledge of dental science, materials science and principles of mechanical engineering, including biomechanics. With the advantage of digital technology, CAD/CAM technology offers high precision restorations with less time consuming and an ability of processing high-strength ceramic such as zirconia, which provides both high esthetics and strength. The review focuses on current knowledge regarding the post and core system, classification of ceramics, CAD/CAM workflow for manufacturing the post and core system and pre-clinical testing of …
Age Estimation By Assessing Developmental Stages Of The Distal End Of Radius Bone In Thai Population, Phonkit Sinpitaksakul, Sunpatch Benjavongkulchai, Anansit Jinawong, Chawanat Wongpattaraworrakul, Sirapat Pipattanachat, Pisha Pittayapat
Age Estimation By Assessing Developmental Stages Of The Distal End Of Radius Bone In Thai Population, Phonkit Sinpitaksakul, Sunpatch Benjavongkulchai, Anansit Jinawong, Chawanat Wongpattaraworrakul, Sirapat Pipattanachat, Pisha Pittayapat
Chulalongkorn University Dental Journal
Objective: The aim of this study was to evaluate developmental stages of the radius bone and compare it with the chronological age of Thai population. Methods: Three hundred hand and wrist radiographs (150 males, 150 females) of subjects (age 7-20 years) were retrospectively collected. The developmental stages of the distal end of the radius bone were modified from Tanner-Whitehouse 3 and categorized into 4 stages: 1) non-capping, 2) capping, 3) partial fusion and 4) complete fusion. Each radiograph was scored by 3 observers. Sixty subjects were re-evaluated for intra- and inter-observer agreement. Statistical analysis was performed. Results: The mean ages …
Anesthetic Efficacy Of Intraosseous And Buccal Infiltration Techniques: A Randomized Controlled Crossover Clinical Trial, Siwaporn Siwawut, Piyanee Panitvisai
Anesthetic Efficacy Of Intraosseous And Buccal Infiltration Techniques: A Randomized Controlled Crossover Clinical Trial, Siwaporn Siwawut, Piyanee Panitvisai
Chulalongkorn University Dental Journal
Background/objectives This randomized controlled crossover clinical trial aimed to compare the anesthetic efficacy between intraosseous and buccal infiltration techniques as a primary anesthesia for mandibular first molars. Materials and methods Twenty adult subjects randomly received intraosseous injection of 1.7 ml 4% articaine with 1:100,000 epinephrine or buccal infiltration of 3.4 ml 4% articaine with 1:100,000 epinephrine at 2 separate appointments. The mandibular first molars were tested for anesthesia with an electric pulp tester at 3-minute cycles for 60 minutes after the injections. Pain ratings for each injection were recorded. The data were analyzed using the McNemar and Wilcoxon signed ranks …
Mechanical And Physical Properties Of An Mma-Based Orthodontic Base-Plate Material After Ultrasonic Treatment In Water, Wadjakorn Thummawanich, Chairat Wiwatwarrapan, Chintana Sirichompun
Mechanical And Physical Properties Of An Mma-Based Orthodontic Base-Plate Material After Ultrasonic Treatment In Water, Wadjakorn Thummawanich, Chairat Wiwatwarrapan, Chintana Sirichompun
Chulalongkorn University Dental Journal
Background/objectives: To evaluate the mechanical and physical properties of a self-cured methyl methacrylate (MMA)-based orthodontic base-plate material after 50°C water immersion in ultrasonic bath and conventional monomer reduction methods. Materials and methods: Twenty-four rectangular and twenty-four disc shaped specimens of an MMAbased orthodontic base-plate material were prepared, and randomly divided into four groups (n=6): Group I, untreated controls; Groups II and III, immersed in room temperature water for 24 and 72 hours respectively; and Groups IV immersed in 50°C water in an ultrasonic bath (100 Watts, 40 kHz) for 10 minutes. Their flexural strength, flexural modulus, microhardness, water sorption, and …
Recent Advances In A Three-Dimensional Fabrication Of Hydroxyapatite-Based Biomaterials For Craniofacial Bone Regeneration, Chanekrid Oupadissakoon, Weerachai Singhatanadgit
Recent Advances In A Three-Dimensional Fabrication Of Hydroxyapatite-Based Biomaterials For Craniofacial Bone Regeneration, Chanekrid Oupadissakoon, Weerachai Singhatanadgit
Chulalongkorn University Dental Journal
Surgical treatment of craniofacial bone abnormalities, caused by head and neck cancers, bone fractures, congenital deformities and periodontal diseases, involves the reconstruction using bone graft implantation. Due to limitations and complications from the use of autogenic and allogenic bone grafts, synthetic bonelike ceramics have therefore become widely used, particularly for hydroxyapatite (HA), which has been used for a multitude of medical applications. Because of an advanced technology in the field of stem cell research and tissue engineering, highly sophisticated and functionalized tissues can be constructed using 3-dimensional (3D) fabricating technology in order to replace the use of human structures or …
Maximum Tensile Resistance Of Non-Adjusted And Adjusted Expansion Screws In The Locking Part Of Unassisted Mandibular Advancement Splint, Uthai Uma, Supranee Vichiennet, Phanomporn Vanichanon
Maximum Tensile Resistance Of Non-Adjusted And Adjusted Expansion Screws In The Locking Part Of Unassisted Mandibular Advancement Splint, Uthai Uma, Supranee Vichiennet, Phanomporn Vanichanon
Chulalongkorn University Dental Journal
Objective: To test the vertical and horizontal tensile forces of the locking part of a novel Unassisted Mandibular Advancement (UMA) Splint. Materials and methods: Twenty samples, each comprising a lower piece and an upper piece with an expansion screw, were prepared. The samples were divided into 4 groups (n=5): 1) non-expanded screw group for vertical force test (NEVT), 2) 5-mm-expanded screw group for vertical force test (5EVT), 3) non-expanded screw group for horizontal force test (NEHT), and 4) 5-mm-expanded screw group for horizontal force test (5EHT). NEVT and 5EVT groups received a vertical tensile force whereas NEHT and 5EHT groups …
Vertical Bracket Position And Occlusal Plane Angle Affected The Perception Of Smile Esthetics, Nadda Manoonsin, Paiboon Techalertpaisarn
Vertical Bracket Position And Occlusal Plane Angle Affected The Perception Of Smile Esthetics, Nadda Manoonsin, Paiboon Techalertpaisarn
Chulalongkorn University Dental Journal
Background/objectives To evaluate the attractiveness of smile arcs obtained by different vertical bracket positions and occlusal plane angles (OPAs). Materials and methods Three dental models represented tooth position after leveling with three bracket positions: a conventional bracket position (Con) according to a guideline based on tooth measurement, and bracket positions resulted in extruding (Ext) or intruding (Int) the maxillary incisors. Photographs of the three models were taken at OPAs of 5, 10, and 15° to the true horizontal. The photographs were digitally morphed onto a posed female smile. Nine smile arc photographs were obtained and assessed by a group of …
Whole Tooth Regeneration Using Organ Transplant Method: Research Comments, Chalida Nakalekha Limjeerajarus, Thanaphum Osathanon
Whole Tooth Regeneration Using Organ Transplant Method: Research Comments, Chalida Nakalekha Limjeerajarus, Thanaphum Osathanon
Chulalongkorn University Dental Journal
No abstract provided.
Correlation Study Between Fractal Properties Of Pre-Operative Bone Trabeculae And Primary Implant Stability Quotient, Napassorn Kangvansurakit, Patita Bhuridej, Atiphan Pimkhaokham, Onanong Chai-U-Dom Silkosessak
Correlation Study Between Fractal Properties Of Pre-Operative Bone Trabeculae And Primary Implant Stability Quotient, Napassorn Kangvansurakit, Patita Bhuridej, Atiphan Pimkhaokham, Onanong Chai-U-Dom Silkosessak
Chulalongkorn University Dental Journal
Background/objectives Resonance frequency analysis (RFA) is a non-invasive method for implant stability evaluation by implant stability quotient (ISQ) value. However, RFA cannot provide pre-implant placement prediction. Therefore, a new method for pre-surgical outcome projection is still needed. Fractal dimension (FD) is a radiographic quantitative analysis for bone complexity, which might be use as a stability predictor at the time of treatment planning. This investigation aimed to study the correlation between FD and ISQ Materials and methods Patients, receiving implant placement at Faculty of Dentistry, Chulalongkorn University between 2013-2017, were screened according to study criteria. Inclusion conditions included presence of ISQ …
Oral Angiomyolipoma: Report Of A Rare Case And Review Of The Literature, Wichuda Kongsong, Sompid Kintarak
Oral Angiomyolipoma: Report Of A Rare Case And Review Of The Literature, Wichuda Kongsong, Sompid Kintarak
Chulalongkorn University Dental Journal
Angiomyolipoma (AML) is a benign tumor that usually affects the kidney. Extrarenal AML is uncommon. Intraoral AML is extremely rare and only 13 cases have been reported in the English-language literature. Although oral AML shares the terminology with renal AML, it presents as solitary mass not associated with tuberous sclerosis complex and is negative for human melanoma marker HMB-45. This article reports a rare case of intraoral AML presenting on the hard palate of a 52-year-old male patient. The surgical excision of this lesion was considered curative and no recurrence has been documented. The literature concerning intraoral AML is also …
Short-Term Compliance With Stabilization Splints In A Group Of Thai Patients With Temporomandibular Disorders, Siriya Pakanimit, Atinuch Malakul, Suknipa Vongthongsri
Short-Term Compliance With Stabilization Splints In A Group Of Thai Patients With Temporomandibular Disorders, Siriya Pakanimit, Atinuch Malakul, Suknipa Vongthongsri
Chulalongkorn University Dental Journal
Objectives To investigate short-term compliance rate in the usage of stabilization splint in temporomandibular disorders (TMD) patients and to analyze the difference in compliance rate classified by the treatment outcome of occlusal splint therapy. Materials and methods A prospective observational study was conducted. The sample group consisted of 90 TMD patients receiving stabilization splint treatment in the Department of Occlusion, Faculty of Dentistry, Chulalongkorn University during January to June 2016. Patients were asked to complete a questionnaire during a period of 14 days after splint insertion in order to determine the compliance to occlusal splint therapy, experience of adverse effects …
Curcumin Promotes Bone Marrow Stromal Cell Viability And Attenuates Tnf- -Induced Prostaglandin E2 Synthesis Via Cyclooxygenase-2 Suppression, Varittha Thongtan, Supaporn Suttamanatwong
Curcumin Promotes Bone Marrow Stromal Cell Viability And Attenuates Tnf- -Induced Prostaglandin E2 Synthesis Via Cyclooxygenase-2 Suppression, Varittha Thongtan, Supaporn Suttamanatwong
Chulalongkorn University Dental Journal
Background Prostaglandin E2 (PGE2) is the main mediator for receptor activator of nuclear factor-κB ligand (RANKL)-mediated osteoclastogenesis and bone resorption in periodontitis. Bone marrow stromal cells (BMSCs) secrete PGE2 in response to pro-inflammatory cytokines, such as tumor necrosis factor-alpha (TNF-α). Curcumin, a polyphenolic compound from the turmeric plant, possesses an anti-inflammatory effect by downregulating key mediators of inflammation. Objectives This study examined the effect of curcumin on the process of PGE2 biosynthesis in TNF-α-stimulated BMSCs. Materials and methods To investigate curcumin cytotoxicity, mouse ST2 BMSCs were treated with 1-50 μM curcumin and cell viability was determined by the MTT assay. …
Evaluation Of Technical Image Quality And Radiation Dose Of A Thai Cone-Beam Ct Scanner, Ruben Pauwels, Saowapak Thongvigitmanee, Sorapong Aootaphao, Chalinee Thanasupsombat, Walita Narkbuakaew, Reinhilde Jacobs, Hilde Bosmans, Soontra Panmekiate, Pairash Thajchayapong
Evaluation Of Technical Image Quality And Radiation Dose Of A Thai Cone-Beam Ct Scanner, Ruben Pauwels, Saowapak Thongvigitmanee, Sorapong Aootaphao, Chalinee Thanasupsombat, Walita Narkbuakaew, Reinhilde Jacobs, Hilde Bosmans, Soontra Panmekiate, Pairash Thajchayapong
Chulalongkorn University Dental Journal
Objectives The aim of this study is to evaluate the technical image quality and radiation dose of the DentiiScan 2.0 cone-beam computed tomography (CBCT) scanner before widespread clinical use. Materials and methods Image quality was measured for 4 scanning protocols of the DentiiScan 2.0, using 2 dedicated test objects: the SEDENTEXCT IQ phantom and the QRM-ConeBeam phantom. The following image quality parameters were evaluated: contrast-detail, contrast-to-noise ratio (CNR), spatial resolution, grey value uniformity, metal artefacts, and geometric accuracy. Radiation dose was measured using a calibrated ionization chamber placed at the isocenter of rotation, allowing for the calculation of the dose-area …
Effect Of Various Chemical Post Surface Treatments On The Microtensile Bond Strength Of Fiber Posts, Siriporn Arunpraditkul, Wacharasak Tumrasvin, Sariya Saoraya, Kamolporn Wattanasirmkit
Effect Of Various Chemical Post Surface Treatments On The Microtensile Bond Strength Of Fiber Posts, Siriporn Arunpraditkul, Wacharasak Tumrasvin, Sariya Saoraya, Kamolporn Wattanasirmkit
Chulalongkorn University Dental Journal
Background/Objectives To evaluate the microtensile bond strength (μTBS) between epoxy-based or dimethacrylate-based fiber posts and resin cores after various post surface treatments. Materials and methods Eighty DT light (DT) and forty FRC Postec Plus (FRC) posts were divided into 8 groups; group 1: silanization (S), group 2: silanization and application of bonding agent (SB), groups 3, 5, 7: etching with 37% phosphoric acid for 1 minute (P), 30% hydrogen peroxide for 10 minutes (H30), 35% hydrogen peroxide for 1 minute (H35), respectively, followed by S, groups 4, 6, 8: etched as in groups 3, 5, and 7, but followed by …
Localized Juvenile Spongiotic Gingival Hyperplasia: A Case Report, Chanekrid Oupadissakoon, Narissaporn Chaiprakit, Weerachai Singhatanadgit
Localized Juvenile Spongiotic Gingival Hyperplasia: A Case Report, Chanekrid Oupadissakoon, Narissaporn Chaiprakit, Weerachai Singhatanadgit
Chulalongkorn University Dental Journal
Localized juvenile spongiotic gingival hyperplasia (LJSGH) is a recently discovered oral lesion in children and young adults, which can be misdiagnosed with gingivitis associated with dental plaque and other well recognized reactive lesions. Clinically, JSGH presents as bright red gingival overgrowth with papillary surface, most commonly at attached and marginal gingivae of the upper anterior region. Differential diagnoses may include pyogenic granuloma, peripheral giant cell granuloma, peripheral ossifying fibroma and hyperplastic gingival inflammation. Histologically distinctive, JSGH is characterized by non-keratinizing stratified squamous epithelium with papillary architecture, intense neutrophilic exocytosis and spongiosis. The objectives of the present case report were to …
Treatment Considerations For Skeletal Class Iii Orthognathic Surgery, Janeta Chavanavesh, Kanok Soratesn
Treatment Considerations For Skeletal Class Iii Orthognathic Surgery, Janeta Chavanavesh, Kanok Soratesn
Chulalongkorn University Dental Journal
Class III malocclusion treatment is challenging to orthodontists because of its genetic basis and tendency for relapse following treatment. In adult patients, this malocclusion can be treated by either camouflage or combined orthodontic and surgical treatment. Since there are complexity in several aspects for Class III malocclusion, particularly in the case where the surgery is required, the aim of this review was to gather information concerning the etiologies, treatment strategies, and treatment considerations, especially for the orthognathic surgical treatment of skeletal Class III patients.
A Swing Arm Design Dental Surveyor, Vichet Chindavanig
A Swing Arm Design Dental Surveyor, Vichet Chindavanig
Chulalongkorn University Dental Journal
The objective was to design and fabricate a dental surveyor using fewer complicated custom made industrial metal parts, thus minimizing production cost. The product design allows working with dental casts of varied dimensions. Current products were analyzed using machine design synthesis. The components of the new surveyor design are predominantly prefabricated objects. The formulation method is comparable with an inverse kinematic engineering approach. A swing arm dental surveyor design was found to be efficient for general dental use at a lower production cost. This article describes the design and assembling method of a dental surveyor made from local common products …
Depth Of Cure, Flexural Strength, Microhardness, And Cytotoxicity Of Light Activated Pit And Fissure Resin-Based Sealant Experimental Prototypes, Pasutha Thunyakitpisal, Sirithan Jiemsirilers, Dujreutai Pongkao Kashima, Onusa Saravari, Nonglax Thunyakitpisal, Thitima Rupunt
Depth Of Cure, Flexural Strength, Microhardness, And Cytotoxicity Of Light Activated Pit And Fissure Resin-Based Sealant Experimental Prototypes, Pasutha Thunyakitpisal, Sirithan Jiemsirilers, Dujreutai Pongkao Kashima, Onusa Saravari, Nonglax Thunyakitpisal, Thitima Rupunt
Chulalongkorn University Dental Journal
Objective To evaluate the light-activated pit and fissure resin-based sealant prototypes (LAS-clear and LAS-opaque) for depth of cure, flexural strength, microhardness, and cytotoxicity compared with commercial light-activated pit and fissure resin-based sealants. Material and methods LAS-clear, LAS-opaque, Delton-clear (DC), Helioseal clear (HC), Helioseal opaque (HO), and Clinpro (CL) were investigated for depth of cure per ISO 6874:2005. Their flexural strength and microhardness were also evaluated. Cytotoxicity was determined using an MTT based colorimetric assay. Statistical analysis was performed using the SPSS program. Results All materials met ISO 6874:2005 requirements. The mean depth of cure of DC, HC, and LAS-clear were …
The Effect Of Ah Plus And Zinc Oxide Eugenol-Based Root Canal Sealers On Preventing Residual Bacteria In Dentinal Tubules From Accessing The Root Canal, Napapas Nidhidvanich, Panida Thanyasrisung, Pavena Chivatxaranukul
The Effect Of Ah Plus And Zinc Oxide Eugenol-Based Root Canal Sealers On Preventing Residual Bacteria In Dentinal Tubules From Accessing The Root Canal, Napapas Nidhidvanich, Panida Thanyasrisung, Pavena Chivatxaranukul
Chulalongkorn University Dental Journal
Background/objectives To investigate the ability of two root canal sealers in preventing residual bacteria in dentinal tubules from accessing the main root canal space. Materials and methods Thirty-five sterilized root samples were randomly assigned to 5 groups: Gutta percha+AH Plus sealer (AH Plus, n=10), Gutta percha+Zinc oxide eugenol sealer (ZOE, n=10), Gutta percha without sealer (GP, n=5), Flowable resin composite coating (composite, n=5), and noninfected samples+GP (aseptic control, n=5). All samples, except the aseptic control, were incubated with Enterococcus faecalis for 4 weeks. All canals were chemo-mechanically prepared and obturated according to the assigned groups. After 1 week, the filling …