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Maxillary incisors are the most frequently injured teeth in the primary and permanent dentition. Stage of adolescence show a significant number of dental injuries as they engage in contact sports. Children with accident prone profile, i.e. class II division I or class I type II malocclusion are more prone for injuries because of the proclined maxil...
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Basic aim of root canal treatment is to fill the root canal system completely in order to prevent re-infection. But, it is not possible to achieve a good apical and lateral seal due to an open apex and an abnormal width and shape of root canal. Endodontic treatment options consist of apical barriers, apexification or more recently, revascularizatio...
ARTICLE INFO ABSTRACT A growing body of pulp space and continued root development in teeth with necrotic pulps and open apexes. The immature root with a necrotic pulp and apical periodontitis presents multiple chall treatment. The purpose of this case report is to present the case of a patient wherein revascularization of the necrotic infected pulp...
Mineral trioxide aggregate (MTA) is a powder
containing calcium silicate composed of hydrophilic
particles which harden at the presence of moisture.
MTA was initially introduced as a root end filling
material. Due its practical advantages that
include superior biocompatility, effective sealing
capability, and the ability to improve regeneration
of...
The present study reports the case of a permanent tooth with incomplete root formation and lateral luxation endodontically treated with a therapeutic protocol associating calcium hydroxide, 2% chlorhexidine gel and zinc oxide (2:1:2 ratio) used as intracanal dressing with no need of replacement. In conventional apexification treatment, intracanal d...
Citations
... Endodontic therapy axioms include proper access, cleansing, and shape, followed by three-dimensional sealing of the root canal system. Nonvital teeth with underdeveloped apex frequently provide difficulties for clinicians [1][2][3][4][5]. ...
Early childhood dental trauma frequently results in the persistence of immature non-vital teeth accompanied by apical periodontitis
and inflammatory external root resorption. Due to the lack of a defined apical stop, such teeth provide various challenges to the clinician. The nonsurgical approach is highlighted in this case report. Endodontic treatment of a comparable patient in a unique approach,
with long-term clinically favorable results.
... Anterior dental trauma is considered a significant clinical problem, and central and lateral incisors are more liable to be traumatized than other teeth. 15 Mostly the maxillary central incisor is involved because of its location in the front and center of the dental arch. It plays an important role in esthetic and the psychological satisfaction of the patient. ...
Purpose:
The aim of this study was to analyze the stress distribution of fiber-reinforced composite provisional fixed partial denture utilizing a finite element analysis model.
Material and methods:
Three anterior teeth were collected: upper right central, left central, and right lateral incisors. A fiber-reinforced composite strip was applied to the palatal surfaces of the teeth. Micro-computed tomographic scans were acquired of the models in order to generate three-dimensional geometrical replicas. Finite element analysis was used to assess the stress distribution of fiber-reinforced composite provisional fixed partial denture using different pontic types under static applied forces which are (100N, 30N, 0N).
Results:
The maximum stress values were found on the unprepared natural pontic. Stress values ranged from 92.2 to 909.8 MPa, 116.4 to 646.7 MPa, and 93.8 to 393.5 MPa for composite, natural prepared, and natural unprepared pontic, respectively.
Conclusions:
Using unprepared natural tooth pontic in anterior provisional fixed partial denture to replace missing central incisors is considered superior to other types in terms of stress distribution. This article is protected by copyright. All rights reserved.
... In this study, we used the software to investigate the utilization of the MCC/sisal/PMMA composite for dental material applications. The model used for the simulation in this study is the maxillary incisors because they are the most fractured teeth in the primary and permanent dentition [35,36]. In this case, the compressive strength of the material used for central incisors is considered higher than that for lateral incisors. ...
The study on polymethyl methacrylate (PMMA)-based composites in dental applications have gained much interest in recent years, resulting in many interesting studies worldwide. In those research, various filler types of reinforcing PMMA have been studied extensively. This study combines the microcrystalline cellulose (MCC) particles (0, 1, 2, 3, 5 vol.%) and sisal fiber to strengthen PMMA. We investigate their effects on the flexural, impact, hardness, compressive strength, water absorption, and thermal properties of (MCC)/sisal/PMMA hybrid composites. XRD, SEM, universal testing machine (UTM), hardness Vickers, TGA, and ANSYS Workbench 2022 R1 software are utilized to characterize the properties of the composite. Adding MCC to alkali-treated sisal/PMMA decreases the flexural and impact strengths but increases the hardness. Adding 1 and 2 vol.% MCC produces maximum flexural and impact strength and hardness values. Simulation on a composite added with 1% MCC by applying a full force load of 14.4 N yields compressive strength of 42.56 MPa. Thermal stability of all composites with and without MCC shows similarity until 250°C but gradually degrades at over 250°C, particularly for composites with MCC. Besides, as the addition of MCC increases, the water absorption also increases, with the lowest value of 37.54 µg/mm3 obtained by the composite added with 1 vol.% MCC, which is within the range of the standard dental materials.
... In this case, the KF/CF/CSMPs-5/PMMA composite is proposed for denture application. Therefore, to understand the compressive strength of KF/CF/CSMPs-5/PMMA composite, the compression test that was simulated on the maxillary central incisor teeth, which is used as a tooth model based on the previous report [21], indicated that the tooth mainly was injured [22]. Applying the method described above with the maximum force load of 94.5 N resulted in compressive strength of 126.66 MPa, as shown in the simulation results (Fig. 4). ...
Polymethyl methacrylate (PMMA)-based composites have been developed in biomedical applications with various reinforcement materials. Kenaf/carbon/PMMA hybrid composites were fabricated by adding chitosan nano and microparticles to characterize their flexural, compression, and water absorption properties affected by chitosan particles. Kenaf/PMMA, carbon/PMMA, and kenaf/carbon/PMMA composites were also studied. Chitosan nanoparticles (∼50 nm) and microparticles in medium molecular weight with concentrations of 1, 3, and 5 vol% were used. Kenaf fiber/carbon fiber ratio of 2:1 and a volume fraction of PMMA matrix of 70% were constant parameters. The flexural properties of the carbon/PMMA composite showed higher values than the others. Adding chitosan particles to kenaf/carbon/PMMA reduced the properties in nano-size or micro-size. However, the properties decrease with chitosan nanoparticle concentration, but not by microparticles. A maximum flexural strength showed a value of 133.57 MPa by adding 5 vol% microparticles. The chitosan nanoparticles tended to aggregate, leading to uneven dispersion within the matrix and decreasing mechanical properties. The compressive strength (126.66 MPa) of kenaf/carbon/PMMA with 5 vol% microparticles was obtained by a simulation applying the maximum force load of 94.5 N. Inversely, adding 5 vol% of chitosan particles showed the highest water uptake of less than 6%. These results would be valuable information in developing dental materials.
... Maxillary incisors are the most frequently injured teeth in the primary and the permanent dentition and injuries in permanent anterior teeth are considered as a disturbing experience for both the child and the parents because of their location, esthetic, psychological and emotional importance [3,4]. ...
Dental trauma of permanent teeth is often the subject of emergency consultations, especially when they are the cause of spectacular lesions such as dental expulsion, lateral luxation, and pulp exposure. Therefore, the purpose of the immediate treatment is to maintain pulp vitality and peri-odontal health of the tooth. The prognosis of these trau-matized teeth depends on the type of dental trauma, the emergency treatment and the time elapsed between the trauma and the treatment. The present report aimed to describes a clinical case of a lateral luxation of the left central maxillary incisor (#21) and uncomplicated crown fracture of the upper right incisor (#11) in a 13-year-old boy. The management of the trauma consisted of reduction and splinting of the tooth 21, and indirect pulp capping of the tooth 11. No signs of complications were reported after 12-months follow-up period.
... Traumatic dental injuries, most commonly affecting the permanent maxillary central incisors result in the impediment of function, structure, esthetics, and psychosocial confidence of an individual [1] . Endodontic treatment generally needs to be performed in teeth with Ellis Class IV fracture [6] . But, insufficient crown structure generally demands the placement of intracanal post-supported crown restorations [7] . ...
Mineral trioxide aggregate (MTA) is a dental material used extensively for vital pulp therapy (VPT), scaffold cover during regenerative endodontic procedures, apical barrier in teeth with necrotic pulps and open apices, perforation repair, and root canal filling and root-end filling during surgical endodontics. A number of bioactive endodontic cements (BECs) have recently been introduced to the market. Most of these materials had calcium and silicate in their compositions; however, the bioactivity is the common property of these cements. These materials include: BioAggregate, Biodentine, BioRoot RCS, calcium enriched mixture (CEM) cement, Endo-CPM, Endocem, EndoSequence, EndoBinder, EndoSeal MTA, iRoot, MicroMega MTA,, MTA Bio, MTA Fillapex, MTA Plus, Neo MTA Plus, Ortho MTA, Quick-Set, Retro MTA, Tech Biosealer, and TheraCal. It has been claimed that these materials have properties similar to those of MTA but without the drawbacks. In Part I of this discussion we extensively reviewed available information on the chemical composition of the materials listed above and reported their applications for VPT.
Frequent occurrence of dental trauma in the early childhood often leads to persistence of immature nonvital tooth supplemented by periapical periodontitis as well as inflammatory external root resorption. Such teeth pose several difficulties in front of the clinician primarily due to absence of definite apical stop. The present case report highlights the nonsurgical endodontic management of a similar case in a novel way with long term clinically favourable outcome.
