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Kyung-san Min - One of the best experts on this subject based on the ideXlab platform.

  • endodontic management of a c shaped Maxillary First Molar with three independent buccal root canals by using cone beam computed tomography
    Restorative Dentistry and Endodontics, 2012
    Co-Authors: Lorena Karanxha, Heejin Kim, Sungok Hong, Wan Lee, Pyungsik Kim, Kyung-san Min
    Abstract:

    The aim of this study was to present a method for endodontic management of a Maxillary First Molar with unusual C-shaped morphology of the buccal root verified by cone-beam computed tomography (CBCT) images. This rare anatomical variation was confirmed using CBCT, and nonsurgical endodontic treatment was performed by meticulous evaluation of the pulpal floor. Posttreatment image revealed 3 independent canals in the buccal root obturated efficiently to the accepted lengths in all 3 canals. Our study describes a unique C-shaped variation of the root canal system in a Maxillary First Molar, involving the 3 buccal canals. In addition, our study highlights the usefulness of CBCT imaging for accurate diagnosis and management of this unusual canal morphology.

  • Endodontic management of supernumerary tooth fused with Maxillary First Molar by using cone-beam computed tomography.
    Journal of endodontics, 2010
    Co-Authors: Chang-kyu Song, Hoon-sang Chang, Kyung-san Min
    Abstract:

    Abstract Introduction Fusion is a rare occurrence, and its definitive diagnosis is of prime importance for successful root canal treatment. This case report discusses the endodontic management of a supernumerary tooth fused with a right Maxillary First Molar by using cone-beam computed tomography (CBCT). Methods Nonsurgical endodontic retreatment was performed on the supernumerary tooth. A communication between the Maxillary First Molar and the supernumerary tooth was repaired by using flowable resin. Results After 1 year of follow-up, there were no clinical symptoms, and the Maxillary First Molar remained vital. Recall radiographs and CBCT showed satisfactory healing of the periapical pathosis. Conclusions Proper diagnosis and treatment planning for endodontic management of fused teeth by using CBCT can ensure predictable and successful results.

Yngtzer J Lin - One of the best experts on this subject based on the ideXlab platform.

  • long term space changes after premature loss of a primary Maxillary First Molar
    Journal of Dental Sciences, 2017
    Co-Authors: Yngtzer J Lin, Yaitin Lin
    Abstract:

    Abstract Background/purpose The consequence of premature loss of primary teeth resulting in the need for space maintainers has been controversial for many years. There is no longitudinal long-term report in literature regarding the premature loss of a primary Maxillary First Molar. The aim of this study was to continue observing the long-term space changes of 19 cases following premature loss of a primary Maxillary First Molar during the transition from primary to permanent dentition. Materials and methods Ten of the 19 original participants were excluded because of extensive decay or loss to follow-up. Nine children (mean age at time of tooth extraction, 6.0 ± 0.42 years) with unilateral premature loss of a primary Maxillary First Molar were examined. Maxillary dental study casts were obtained 2 days or 3 days after tooth removal and, on average, 81 months later. The contralateral intact primary Molars in each participant served as controls. The arch width, arch length, intercanine width, intercanine length, and arch perimeter of each study cast from the initial and follow-up examinations were measured and compared using paired t -tests. Results Eight of nine cases (88.9%) did not show crowded permanent successors or canine block-out at the extraction site. Interestingly, the permanent dentition was more crowded at the control site (2/9) than at the extraction site (1/9). The arch width, arch length, intercanine width, and intercanine length significantly increased at 81 months (P  Conclusion The anterior and posterior arch dimensions significantly increased 81 months after premature loss of a primary Maxillary First Molar, which suggested that space maintainers were not needed in these cases.

  • twelve month space changes after premature loss of a primary Maxillary First Molar
    International Journal of Paediatric Dentistry, 2011
    Co-Authors: Yaitin Lin, Wenhsien Lin, Yngtzer J Lin
    Abstract:

    International Journal of Paediatric Dentistry 2011; 21: 161–166 Background.  Many early investigations concerning space changes following premature extraction of primary Molars had a cross-sectional design, a small sample size, and a somewhat crude methodology, which may have led to misunderstandings. Aim.  The aim of this study was to use established longitudinal data to investigate ongoing (12-month) dental-arch space problems arising as a result of premature loss of a primary Maxillary First Molar. Design.  Thirteen children (mean ± SD age at time of tooth extraction, 6.0 ± 0.74 years) with unilateral premature loss of a primary Maxillary First Molar were selected for this study. Maxillary dental study casts were obtained from participants 2 or 3 days after the tooth was removed, as well as at a follow-up appointment 12 months later. Six reference lines were measured on the study cast: D + E space, arch width, arch length, intercanine width, intercanine length, and arch perimeter. For each participant, the D + E space of the contralateral intact primary Molar served as a control. A paired t-test was used to compare the cast measurements between initial examination and 12-month follow-up. A t-test was used to compare D + E space changes with those of the control group. Results.  The D + E space of the extraction side after 12 months was significantly smaller than that of the control side (P   0.05). Conclusions.  The 12-month space changes in the Maxillary dental arch after premature loss of a primary Maxillary First Molar consist mainly of distal drift of the primary canine toward the extraction site. Mesial movement of permanent Molars or tilting of the primary Molars did not occur. An increased arch dimension was found especially in the anterior segment (intercanine width and length). There is no need for the use of space maintainers from the results in this study in cases of premature loss of a primary First Molar.

  • immediate and six month space changes after premature loss of a primary Maxillary First Molar
    Journal of the American Dental Association, 2007
    Co-Authors: Yaitin Lin, Wenhsien Lin, Yngtzer J Lin
    Abstract:

    ABSTRACT Background Premature loss of primary Maxillary First Molars has been associated with a number of consequences (such as tipping of the First permanent Molar). The aim of the authors' study was to investigate dental-arch space problems arising as a result of premature loss of a primary Maxillary First Molar. Methods This study was composed of 19 children who experienced unilateral premature loss of a primary Maxillary First Molar. The authors used each patient's intact contralateral arch segment as a control. The authors obtained Maxillary dental study casts two or three days after the tooth was extracted, as well as six months later. Results The D + E space from the extraction side six months after removal of the tooth (mean ± standard deviation, 15.62 ± 1.13 millimeters) was significantly smaller than the space on the control side (16.88 ± 1.12 mm) and the initial D + E space (16.70 ± 0.69 mm). The authors found a significantly shorter arch length (25.47 ± 1.58 mm) and larger intercanine width (31.29 ± 2.49 mm) six months after the tooth was extracted compared with the initial arch length (25.66 ± 1.64 mm) and intercanine width (30.42 ± 2.64 mm). Conclusions The early space changes to the Maxillary arch subsequent to premature loss of a primary Maxillary First Molar are primarily distal drift of the primary canines toward the extraction space and palatal migration of the Maxillary incisors. Although 1 mm of space was lost, which is statistically significant, this is not likely to be of sufficient clinical significance to warrant use of a space maintainer. If palatal movement appears to be needed, the dentist should consider use of a palatal arch rather than a band-and-loop maintainer. Clinical Implications The effects of space maintainers need to be re-evaluated in cases of unilateral premature loss of a primary Maxillary First Molar.

S I Kratchman - One of the best experts on this subject based on the ideXlab platform.

  • conventional and surgical endodontic treatment of a Maxillary First Molar with unusual anatomy a case report
    International Endodontic Journal, 2011
    Co-Authors: S Floratos, S I Kratchman
    Abstract:

    Floratos S, Kratchman SI. Conventional and surgical endodontic treatment of a Maxillary First Molar with unusual anatomy – a case report. International Endodontic Journal. Abstract Aim  To describe conventional and surgical endodontic treatment of a Maxillary left First Molar with two canals on the distobuccal root and to discuss the treatment outcome. Summary  According to the literature, the presence of a second canal on the distobuccal root of a Maxillary First Molar is rare. This anatomical anomaly might lead to an unfavourable outcome if clinicians fail to identify and treat it properly. The following case report describes conventional and surgical endodontic treatment of a Maxillary left First Molar with two canals on the distobuccal root. Key learning points  •  Anatomical variations of the root canal system are a challenge for clinicians during root canal retreatment. •  The principles and techniques of endodontic microsurgery are of utmost importance in clinical practice, and clinicians should be aware of them.

S Calt - One of the best experts on this subject based on the ideXlab platform.

  • c shaped root canal in a Maxillary First Molar a case report
    International Endodontic Journal, 2006
    Co-Authors: Zeliha Yilmaz, Behram Tuncel, Ahmet Serper, S Calt
    Abstract:

    Yilmaz Z, Tuncel B, Serper A, Calt S. C-shaped root canal in a Maxillary First Molar: a case report. International Endodontic Journal, 39, 162-166, 2006. Aim This case report presents an unusual C-shaped root canal system in a Maxillary First Molar tooth. Summary Although C-shaped root canals are most frequently seen in the mandibular second Molar, they may also appear in Maxillary Molars. A literature search revealed only a few case reports of C-shaped root canal systems in Maxillary Molars. The present case describes a C-shaped canal in the buccal root of a Maxillary First Molar. The endodontic access cavity displayed two canal orifices, one leading to the canal system in the buccal root, the other into the palatal root canal system. In the buccal root, what appeared to be the mesial and distal canals joined to form a single C-shaped canal. Key learning points • Careful examination of radiographs and the internal anatomy of teeth is essential. • The location and morphology of root canals should be identified at high magnification under the microscope.

Senthilkumar Hemamalathi - One of the best experts on this subject based on the ideXlab platform.

  • Maxillary First Molar with seven root canals diagnosed with cone beam computed tomography scanning a case report
    Journal of Endodontics, 2010
    Co-Authors: Jojo Kottoor, Natanasabapathy Velmurugan, Rajmohan Sudha, Senthilkumar Hemamalathi
    Abstract:

    Abstract Introduction The purpose of this article was to emphasize the importance of having a thorough knowledge about the root canal anatomy. Methods This case report presents the endodontic management of a Maxillary First Molar with three roots and seven canals. The clinical detection of the seven canals was made using a surgical operating microscope and confirmed using cone-beam computed tomography (CBCT) scanning. Results CBCT axial images showed that both the palatal and distobuccal root have a Vertucci type II canal pattern, whereas the mesiobuccal root showed a Sert and Bayirli type XV canal configuration. Conclusion This report describes and discusses the variation in canal morphology of Maxillary First Molar and the use of latest adjuncts in successfully diagnosing and negotiating them.