Objective: This study aimed to validate the integrated correlation between the buccal bone and gingival thickness of the anterior maxilla, and to gain insight into the reference plane selection when measuring these two tissues before treatment with implants.
Methodology: Cone beam computed tomography (CBCT) and model scans of 350 human subjects were registered in the coDiagnostiX software to obtain sagittal maxillary incisor sections. The buccal bone thickness was measured at the coronal (2, 4, and 6 mm apical to the cementoenamel junction [CEJ]) and apical (0, 2, and 4 mm coronal to the apex plane) regions. The buccal gingival thickness was measured at the supra-CEJ (0, 1mm coronal to the CEJ) and sub-CEJ regions (1, 2, 4, and 6 mm apical to the CEJ). Canonical correlation analysis was performed for intergroup correlation analysis and investigation of key parameters.
Results: The mean thicknesses of the buccal bone and gingiva at different levels were 0.64~1.88 mm and 0.66~1.37 mm, respectively. There was a strong intergroup canonical correlation between the thickness of the buccal bone and that of the gingiva (r=0.837). The thickness of the buccal bone and gingiva at 2 mm apical to the CEJ are the most important indices with the highest canonical correlation coefficient and loadings. The most and least prevalent subgroups were the thin bone and thick gingiva group (accounting for 47.6%) and the thick bone and thick gingiva group (accounting for 8.6%).
Conclusion: Within the limitations of this retrospective study, the thickness of the buccal bone is significantly correlated with that of the buccal gingiva, and the 2 mm region apical to the CEJ is a vital plane for quantifying the thickness of these two tissues.
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http://dx.doi.org/10.1590/1678-7757-2024-0018 | DOI Listing |
J Korean Assoc Oral Maxillofac Surg
December 2024
Oral Oncology Clinic, Research Institute and Hospital, National Cancer Center, Goyang, Korea.
J Indian Soc Periodontol
December 2024
Department of Periodontology and Implantology, G. Pulla Reddy Dental College and Hospital, Kurnool, Andhra Pradesh, India.
Background: The present study aims to evaluate a three-dimensional (3D) changes in the crestal bone levels (buccally, lingually/palatally, mesially, and distally) and in the thickness of keratinized tissue around single or multiple implants using cone-beam computed tomography (CBCT) after 1 year.
Materials And Methods: Twenty-eight implants were placed in the posterior load-bearing areas in 10 patients. The crestal bone levels and the thickness of keratinized tissue surrounding the edentulous area were assessed preoperatively, immediately after implant placement, and 1 year after implant placement using CBCT (3D imaging technique with DICOM software (Carestream Health, Rochester, NY)).
J Indian Soc Periodontol
December 2024
Department of Periodontics, MGV's KBH Dental College and Hospital, Nashik, Maharashtra, India.
Introduction: Following tooth extraction, there is comparatively more bone loss at the buccal aspect at 3 months of healing, which may result in 56% bone loss due to resorption of the bucco-facial ridge contour. In the socket shield technique, a tooth is planned for extraction in such a way that the tooth is sectioned in two halves, a palatal section is removed and the facial part is retained.
Materials And Methods: Twenty-six sites, i.
Head Neck
December 2024
Department of Radiation Oncology, Tata Medical Center, Kolkata, India.
Background: Patients with locally advanced, surgically unresectable oral squamous cell cancers (SU-OSCC) are often treated with palliative intent. There is limited information on the outcomes of radical intent treatment with radiotherapy (RT) or chemoradiotherapy (CRT).
Methods: We retrospectively examined patients with Stage III/IV previously untreated SU-OSCC treated definitively from 2011 to 2021 in a single institution with RT or CRT with or without neoadjuvant chemotherapy (NACT).
J Endod
December 2024
State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, 237# Luoyu Road, Wuhan 430079, People's Republic of China. Electronic address:
Introduction: This study aimed to assess the effect of cavity designs on instrumentation, obturation and fracture resistance for mandibular first premolars with Vertucci V canal.
Methods: Mandibular first premolars with Vertucci V canal were scanned with micro-CT. 20 teeth with moderately curved canal were prepared with conservative endodontic cavity (CEC/M) or traditional endodontic cavity (TEC/M), and 30 with severely curved canal were prepared with CEC (CEC/S), modified CEC (MCEC/S) or TEC (TEC/S).
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