The Sealing Ability and Retention Characteristics of Mineral Trioxide Aggregate in a Model of Apexification

Hachmeister, Darlene R.; Schindler, William G.; Walker, W. Allan; Thomas, D D

doi:10.1097/00004770-200205000-00010

Cited by 270 publications

(257 citation statements)

References 16 publications

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“…The sealing ability and retention characteristics of MTA in a model of apexification was tested in an in vitro study using human, extracted, single-rooted teeth. 38 Some leakage was recorded in this study, but this was thought to be as a result of the intracanal delivery technique rather than the material itself.…”

Section: Apexificationmentioning

confidence: 72%

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Weakened anterior roots – intraradicular rehabilitation

2005

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This paper highlights the fact that many anterior teeth requiring restoration are severely weakened having wide, flared canal spaces, and thin dentinal walls that are prone to fracture. Traditionally these teeth have been restored using metal posts and are often unsuccessful because of lack of retention or root fracture. This paper describes how mineral trioxide aggregate (MTA) can be used to form an immediate apical seal rather than waiting months for apexification. Weakened roots can be reinforced using dentine bonding agents and composite resin and if insufficient coronal tooth structure is present a quartzfibre post can be placed to retain a composite core.  Root filled teeth are often compromised by incomplete root formation, secondary caries around posts, inappropriate post space preparation, and internal resorption.  Traditional methods of restoration using metal posts and pins are often unsatisfactory.  Instead of waiting for the formation of a calcific bridge during apexification, mineral trioxide aggregate can be placed as an immediate apical seal.  Weakened roots can be reinforced using dentine bonding agents, composite resin and quartzfibre posts.

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Section: Apexificationmentioning

confidence: 72%

“…7). 38 This should then be evaluated radiographically and if the MTA appears poorly condensed it can be rinsed out with sterile water and the procedure repeated. Any traces of excess MTA on the post preparation wall can be removed with a moist paper point.…”

Section: Clinical Procedures Placement Of Apical Mta Plugmentioning

confidence: 99%

Weakened anterior roots – intraradicular rehabilitation

2005

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“…Some research has shown that the remains of calcium hydroxide on the dentinal walls had no significant effect on MTA microleakage 8 . In contrast, others have suggested that the remnants react and form calcium carbonate, which interferes with apical sealing 19 .Others have suggested that the combination of calcium hydroxide and MTA in apexification procedures may favorably influence the regeneration of the periodontium 9 .…”

Section: Discussionmentioning

confidence: 97%

Orthograde Apical Application of an MTA Plug in a Tooth without Constriction - A Case Report

2016

IJSR

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Abstract:The periapical area in teeth with chronic lesions is characterized by changes in the adjacent bone structure and periodontal ligaments, as well as in the cement and dentine. In a large percentage of cases, the apical physiological constriction is ether absent or expanded. The absence of a constriction makes it a challenge to achieve satisfactory treatment results.The present case report describes the re-treatment of a case of a mandibular molar, complicated by lack of constriction and a separated endodontic instrument. Mineral trioxide aggregate (MTA) was used for a 5-mm apical plug to avoid overfilling of the sealer when the root canal was definitely obturated. The periapical radiographs showed satisfactory images of periapical bone density and the tooth was asymptomatic on precision. MTA is proved to be an appropriate material for apical sealing in cases with resorption, as it leads to avoidance of apical surgical procedures with a similar prognostic outcome.

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“…18 Glass fiber posts are an alternative for the restoration of teeth with IR due they have modulus of elasticity similar to dentine. 19,20 The use of an apical plug with MTA has been suggested for endodontic therapy of teeth with IR, [21][22][23] resulting in a faster treatment and inducing the mineralized tissue formation in the root apex. 24 The root canal filling using Epiphany/…”

Section: 10mentioning

confidence: 99%

Resistance of Teeth with Simulated Incomplete Rhizogenesis with Intraradicular Post or Root Canal Filling

Tanomaru‐Filho

Sivieri-Araújo²,

Guerreiro-Tanomaru

et al. 2014

The Journal of Contemporary Dental Practice

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Aim: The aim of this study was to evaluate the fracture strength (FS) of bovine incisors with simulated incomplete rhizogenesis (IR) after different intraradicular treatments. Materials and methods:Incomplete rhizogenesis was simulated by sectioning the crowns and roots of 40 bovine incisors. Root canal preparation was performed and the samples divided into 4 groups (n = 10): GI-negative control with intra-radicular preparation; GII-positive control without intra-radicular preparation; GIII-glass fiber post cemented with resin cement and GIVroot canal obturation with Epiphany/Resilon system. In GIII and GIV, 4.0 mm apical plugs of mineral trioxide aggregate (MTA) were done. The samples were embedded into cylinders with polystyrene resin, and the periodontal ligament was simulated with a medium-viscosity polyether-based impression material (Impregum Soft). The specimens were submitted to compressive fracture strength test (0.5 mm/min at 135º in relation to the long axis of the tooth) in a mechanical testing machine MTS 810. Data were submitted to ANOVA and Tukey's test (α = 0.05).Results: GIII produced the highest FS values (p < 0.05). GI and GIV showed similar FS results (p > 0.05) but smaller than GII (p < 0.05). Conclusion:Glass fiber intraradicular posts provided the FS increase of teeth with simulated incomplete rhizogenesis. Epiphany/Resilon root canal filling with MTA plug did not provide the increase of the fracture strength to teeth with simulated incomplete rhizogenesis. Clinical significance:The fiber post reinforces the root structure of teeth with incomplete rhizogenesis.

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The Sealing Ability and Retention Characteristics of Mineral Trioxide Aggregate in a Model of Apexification

Cited by 270 publications

References 16 publications

Weakened anterior roots – intraradicular rehabilitation

Weakened anterior roots – intraradicular rehabilitation

Orthograde Apical Application of an MTA Plug in a Tooth without Constriction - A Case Report

Resistance of Teeth with Simulated Incomplete Rhizogenesis with Intraradicular Post or Root Canal Filling

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