The Experts below are selected from a list of 3066 Experts worldwide ranked by ideXlab platform

Eui-hwan Hwang - One of the best experts on this subject based on the ideXlab platform.

  • Aspergilloma of the Maxillary sinus: report of a case
    Imaging Science in Dentistry, 2010
    Co-Authors: Ju-han Kang, Gyu-tae Kim, Yong-suk Choi, Eui-hwan Hwang
    Abstract:

    Aspergilloma of the paranasal sinus is a non-invasive form of aspergillosis, most often in the Maxillary sinus. This case presents an 86-year-old female with aspergilloma of the left Maxillary sinus. The patient's chief complaint was intermittent pain on the left Maxillary First Premolar area. A radiopacification of the left Maxillary sinus was observed on the panoramic radiograph. Cone-beam computed tomography revealed complete radiopacification of the left Maxillary sinus and scattered multiple radiopaque mass inside the lesion. Biopsy was performed under local anesthesia. On microscopic examination, numerous fungal hyphae, which branch at acute angle, were observed. The diagnosis was made as an aspergilloma based on the histopatholgic examination.

Subhash Gupta - One of the best experts on this subject based on the ideXlab platform.

  • root and canal morphology of Maxillary First Premolar teeth in north indian population using clearing technique an in vitro study
    Journal of Conservative Dentistry, 2015
    Co-Authors: Shraddha Gupta, Dakshita Joy Sinha, Owais Gowhar, Shashi Prabha Tyagi, Narendra Nath Singh, Subhash Gupta
    Abstract:

    Aim: The purpose of this study was to determine the root form and canal configuration in Maxillary First Premolars. Materials and Methods: A total of 250 extracted human adult Maxillary First Premolar teeth from North Indian population were collected. Access cavities were prepared and the coronal pulp tissue was extirpated. The samples were stored in 5% nitric acid solution for 5 days. They were then rinsed, dried, and dehydrated using increasing concentrations of ethanol (70, 80, and 95%) successively for 1 day. Teeth were rendered transparent by immersing in methyl salicylate. India ink was then injected. The root canal morphology was examined under stereomicroscope. Result: 53.6% were single rooted followed by fused root form followed by two root form. 0.4% had three rooted Maxillary First Premolar. Variable root canal configurations were also found. Type IV configuration was most prevalent (33.2%). Two teeth showed an additional configuration. Lateral canals were present in 34.8% of the samples and intercanal communications in 16%. Conclusion: Within the limitations of this study, it was concluded that in North Indian population, there was an increased propensity for types IV, I, II, and III canal morphologies in Maxillary First Premolars. Single root form was most common.

Paul Michael Howell Dummer - One of the best experts on this subject based on the ideXlab platform.

  • Root and canal morphology of Maxillary First Premolars in a Chinese subpopulation evaluated using cone-beam computed tomography.
    International endodontic journal, 2012
    Co-Authors: Y. Y. Tian, B. Guo, R. Zhang, H. Wang, Paul Michael Howell Dummer
    Abstract:

    Aim  To evaluate the external and internal anatomy of Maxillary First Premolar teeth in a Chinese subpopulation using cone-beam computed tomography (CBCT). Methodology  A total of 300 CBCT images involving Maxillary First Premolar teeth were obtained from 241 patients who underwent CBCT scanning as part of an oral and dental examination for bone mass before placement of implants or to locate impacted teeth before orthodontic therapy. Tooth position, number of roots, canal configuration, number of canals and number of apical foramina per root were investigated. The Fisher’s exact test was used to analyse the correlation between root number and tooth position. Results  Overall, 66% (n = 198) of teeth had one root and 33% (n = 100) had two roots; the remaining 1% (n = 2) had three roots. This frequency distribution showed no statistical significance between left and right sides. The most frequent canal configuration of these Maxillary First Premolars was type IV (n = 153; 51%), followed by type II (n = 70; 23%), with only 1% (n = 2) of teeth having type VIII. One-rooted teeth with canal bifurcations and/or combinations (types II, III, V, VI and VII) accounted for nearly 50% (n = 98) of the sample. Eighty-five per cent (n = 255) of the teeth examined had two root canals (types II–VII), and 14% (n = 43) had one. Amongst the 59 patients with bilateral teeth, 38 had a symmetrical pattern of tooth anatomy, including the same number of roots and the same types of canal configurations. Conclusions  There was a high frequency of one-rooted teeth amongst Maxillary First Premolars, with most having one root with two canals (types II–VII). The morphology of the canal in one-rooted teeth was highly variable.

Saad Alnazhan - One of the best experts on this subject based on the ideXlab platform.

  • pulp revascularization of immature Maxillary First Premolar
    Journal of Conservative Dentistry, 2015
    Co-Authors: Nuha S Alghamdi, Saad Alnazhan
    Abstract:

    An immature Maxillary First Premolar in an 8-year-old female was treated using a regenerative approach. The root canal was gently irrigated with 5.25% sodium hypochlorite without instrumentation under aseptic conditions and then medicated with calcium hydroxide (Ca[OH] 2 ) for 3 weeks. The Ca(OH) 2 was removed, and bleeding was initiated mechanically using a hand file to form an intracanal blood clot. Mineral trioxide aggregate was placed over the blood clot, and the access cavity was sealed with a double filling. Increases in root length and width were radiographically evident, at the 6-month follow-up exam. The case was followed for 3 years. The development of 3 roots with complete apical closure was confirmed using cone beam computed tomography.

Gururaj Nadig - One of the best experts on this subject based on the ideXlab platform.

  • Endodontic treatment of a Maxillary First Premolar with three roots a case report
    Journal of Conservative Dentistry, 2005
    Co-Authors: Shashi G Rekha, Prasannalatha Nadig, Gururaj Nadig
    Abstract:

    The purpose of this paper was to report the possibility for successful endodontic treatment of a complex case of Maxillary . First Premolar with three roots and three canals. Radiographic interpretation and correct access cavity preparation were performed. Cleaning and shaping of the root canal followed by cold lateral gutta percha condensation was accomplished. The present report emphasizes the knowledge ofanatomical variations, clinical and radiographic interpretations in Maxillary First Premolar.