The impact of improved access and searching techniques on detection of the mesiolingual canal in maxillary molars

Weller, R. Norman; Hartwell, Gary R.

doi:10.1016/s0099-2399(89)80114-1

Cited by 60 publications

(6 citation statements)

References 8 publications

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“…Exploring those depressions and isthmuses with ultrasonic troughing is highly effective. 19 In addition to periapical radiographs, the cone-beam computed tomography (CBCT) might be useful for the assessment and appreciation of extremely complex root canal systems prior to, and aiming to enhance, endodontic management. 20 Technically, the over-enlargement of the root canals should be avoided at all costs in cases with multiple canal configurations, to minimize the chance of root weakness.…”

Section: Discussionmentioning

confidence: 99%

Endodontic management of maxillary permanent first molar with seven root canals – Report of two cases

Pires¹,

Martins²

2020

j.rpemd

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The maxillary first molar has been presented as a tooth with an enormous variety of root canal system configurations. The purpose of this paper is to present two cases of maxillary first molars displaying an uncommon seven root canal system morphology. After a proper access opening of the maxillary molars undergoing a root canal treatment, two dark developmental grooves were seen connecting both the main buccal canals to the palatal one. Under the magnification and illumination of a dental operating microscope, these two grooves were explored with ultrasonic tips, which allowed identifying several other root canal orifices in both buccal roots complemented by a single palatal root canal in one case, and two in the other. Embryological reasons and the best clinical approaches to these complex morphologies are also debated. Bearing in mind the complexities of internal anatomy can help maximize the success rates of endodontic treatment. (Rev Port Estomatol Med Dent

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Section: Discussionmentioning

confidence: 99%

Endodontic management of maxillary permanent first molar with seven root canals – Report of two cases

Pires¹,

Martins²

2020

j.rpemd

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“…After accessing the chamber, careful evaluation of developmental grooves, meticulous use of DG 16 explorer and use of magnification, if available, should be used. Any remaining dentine projections should be removed carefully with the help of ultrasonic devices 12. The presence of an eccentrically placed file on radiograph should also raise suspicion of presence of an extra canal.…”

Section: Discussionmentioning

confidence: 99%

Maxillary first molar with five canals

Umer

2014

BMJ Case Reports

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SUMMARYRoot canal treatment is a technically demanding procedure especially in the case of maxillary first molar where the anatomy is extremely variable. Failure to recognise and treat these variations may lead to unpredictable outcomes. This case report describes nonsurgical endodontic treatment of a maxillary first molar with two palatal and two mesiobuccal canals. It also highlights the need for good anatomical knowledge of root canal morphology and its variations in order to achieve consistently successful results. BACKGROUND

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“…The dentist selects the appropriate tools, including special fissure drills for cutting metal in prosthetic crowns, and drills the occlusal surface at the point chosen according to the previously described rules. Complete removal of the pulp chamber roof [92] makes it possible to search for holes. It should not groove or perforate the walls or floor of the chamber.…”

Section: Principles Of Tooth Qualification For Endodontic Treatmentmentioning

confidence: 99%

Is Gutta-Percha Still the “Gold Standard” among Filling Materials in Endodontic Treatment?

Dobrzańska¹,

Dobrzański²,

Dobrzański³

et al. 2021

Processes

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The paper is an extensive monographic review of the literature, and also uses the results of the authors’ own experimental research illustrating the noticed developmental tendencies of the filling material based on gutta-percha. The whole body of literature proves the correctness of the research thesis that this material is the best currently that can be used in endodontics. Caries is one of the most common global infectious diseases. Since the dawn of humankind, the consequence of the disease has been the loss of dentition over time through dental extractions. Both tooth caries and tooth loss cause numerous complications and systemic diseases, which have a serious impact on insurance systems and on the well-being, quality, and length of human life. Endodontic treatment, which has been developing since 1836, is an alternative to tooth extraction. Based on an extensive literature review, the methodology of qualifying patients for endodontic treatment was analyzed. The importance of selecting filling material and techniques for the development and obturation of the root canal during endodontic treatment was described. Particular attention was paid to the materials science aspects and the sequence of phase transformations and precipitation processes, as well as the need to ensure the stoichiometric chemical composition of Ni–Ti alloys, and the vacuum metallurgical processes and material processing technologies for the effects of shape memory and superelasticity, which determine the suitability of tools made of this alloy for endodontic purposes. The phenomena accompanying the sterilization of such tools, limiting the relatively small number of times of their use, play an important role. The methods of root canal preparation and obturation methods through cold side condensation and thermoplastic methods, including the most modern of them, the thermo-hydraulic condensation (THC) technique, were analyzed. An important element of the research hypothesis was to prove the assumption that to optimize the technology of development and obturation of root canals, tests of filling effectiveness are identified by the density and size of the gaps between the root canal wall, and the filling methods used and devices appropriate for material research, using mainly microscopy such as light stereoscopic (LSM) and scanning electron (SEM). The most beneficial preparations were obtained by making a longitudinal breakthrough of 48 natural human teeth, extracted for medical reasons, different from caries, with compliance with all ethical principles in this field. The teeth were prepared using various methods and filled with multiple obturation techniques, using a virtual selection of experimental variants. The breakthroughs were made in liquid nitrogen after a one-sided incision with a narrow gap created by a diamond disc using a materialographic cutter. The best effectiveness of the root canal filling was ensured by the technology of preparing the root canals with K3 rotary nitinol tools and filling the teeth with the THC thermoplastic method using the System B and Obtura III devices with studs and pellets of filling material based on gutta-percha after covering the root canal walls with a thin layer of AH Plus sealant. In this way, the research thesis was confirmed.

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The impact of improved access and searching techniques on detection of the mesiolingual canal in maxillary molars

Cited by 60 publications

References 8 publications

Endodontic management of maxillary permanent first molar with seven root canals – Report of two cases

Endodontic management of maxillary permanent first molar with seven root canals – Report of two cases

Maxillary first molar with five canals

Is Gutta-Percha Still the “Gold Standard” among Filling Materials in Endodontic Treatment?

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