Abstract
BackgroundThe anatomical relationship between the root apices of maxillary molars and the maxillary sinus floor (MSF) is important for the treatment of dental implantations and endodontic procedures. In this study, the detailed anatomical relationships between the root apices of maxillary molars and the MSF were studied in a Chinese population using CBCT.MethodsWe collected the CBCT data files of patients who visited the stomatology outpatient clinic in Shanghai Fifth People’s Hospital, Fudan University from January 1, 2017 to January 1, 2019 and measured the following items: the distance between the molar root apices and the MSF, the thickness of the mucosa and cortical bone of the MSF closest to the root apices, and the angle between the buccal and palatal roots.ResultsThe shortest distances between the root apices and the MSF were 1.57 ± 3.33 mm (the mesiobuccal root of the left second molar) and 1.61 ± 3.37 mm (the mesiobuccal root of the right second molar). Apical protrusion over the inferior wall of the sinus most often occurred in the mesiobuccal root of left second molar (frequency, 20.5%). The mucosa of the MSF was thinnest at the distobuccal root of the right second molar (1.52 ± 0.85 mm), the cortical bone of the MSF was thinnest at the mesiobuccal root of the right second molar (0.46 ± 0.28 mm), and the angle between the buccal and palatal roots ranged from 12.01° to 124.2° (42.36 ± 24.33 °).ConclusionsAmong the root apices of the maxillary molars, the mesiobuccal root apex of the left second molar was closest to the MSF, and it had the highest incidence of protrusion into the sinus. The unique anatomical relationship between the maxillary molars and the MSF in this Chinese population is critical for treatment planning for dental implantation or endodontic procedures.
Highlights
The anatomical relationship between the root apices of maxillary molars and the maxillary sinus floor (MSF) is important for the treatment of dental implantations and endodontic procedures
Comparison of sex and location on the relationship between the maxillary molars and the MSF We evaluated the influence of sex and location on the anatomical relationship between the maxillary molars and maxillary sinuses in 104 women and 96 men
Our results demonstrated that the distance between the root apex of the maxillary molars and the MSF, cortical bone thickness of the MSF, Fig. 1 Measurements of maxillary molars using Cone beam computed tomography (CBCT) cross-sectional images
Summary
The anatomical relationship between the root apices of maxillary molars and the maxillary sinus floor (MSF) is important for the treatment of dental implantations and endodontic procedures. The detailed anatomical relationships between the root apices of maxillary molars and the MSF were studied in a Chinese population using CBCT. The vertical relationship between the MSF and the maxillary root apices varies according to age and Conventional radiographic exams, including periapical and panoramic radiographs, are commonly used for the study of the anatomical relationship between molar root apices and the MS F[8]. These two-dimensional images have limitations that may prevent the correct. Many studies have focused on the vertical relationship between the maxillary molar root apices and the MSF in Brazilians, Russian, Korean and Turkey,[7, 12,13,14] detailed anatomical studies of the proximity of molar root apices and the MSF in the Chinese population are rar e[15, 16]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
