scholarly journals Radioanatomic image of alveolar bone crest, cementoenamel junction and dental apex in orthopantomograph 100 panoramic radiography

2007 ◽  
Vol 19 (3) ◽  
Author(s):  
Yeni Rahmawati ◽  
A. Azhari ◽  
Belly Sam
Keyword(s):  
Alveolar Bone ◽  
Panoramic Radiography ◽  
Maxillary Incisor ◽  
Entire Region ◽  
Mandibular Incisor ◽  
Average Value ◽  
Descriptive Research ◽  
Mandibular Molar ◽  
Maxillary Molar ◽  
Molar Region

Panoramic radiography can be used in most dentomaxillofacial procedures, that can give a wide coverage of teeth and supporting tissue for assisting diagnosis. The aim of this research was to obtain data about the validity of panoramic radiography for measuring radioanatomy alveolar bone crest, cementoenamel junction (CEJ), and dental apex which is useful in measuring the level of alveolar bone resorption. This descriptive research and measurement was done to 25 sample which fulfilled sample criteria from panoramic radiography result by orthopantomograph 100. This research was done with Ramfjord criteria radioanatomy point. The result of this research showed that the average value measured of alveolar bone crest from the entire region was about 41.67%, most value at the mandibular molar was about 92%, the least value at the maxillary premolar was about 0%. The average value measured of CEJ from entire region was about 11%, most value at the maxillary molar and mandibular molar about 26%, at least value at the maxillary incisor, mandibular incisor, and maxillary premolar were about 0%. The average value measured of dental apex from the entire region was about 56.33%, most value at the mandibular molar was about 96%, the least value at the maxillary premolar was about 8%. The conclusion of this research was a part of radioanatomy alveolar bone crest and a part of dental apex could be measured, while CEJ at least measured. Measurement from the three of radioanatomy point showed the mandibular molar region which was at most measured.

scholarly journals Incisor position and alveolar bone thickness:

2021 ◽  
Author(s):  
Will A. Andrews ◽  
Wakas S. Abdulrazzaq ◽  
Jeffrey E. Hunt ◽  
Lucas M. Mendes ◽  
Linda A. Hallman
Keyword(s):  
Alveolar Bone ◽  
Root Apex ◽  
Class Ii ◽  
Maxillary Incisor ◽  
Bone Thickness ◽  
Mandibular Incisor ◽  
Lateral Cephalograms ◽  
Incisor Inclination ◽  
Root Apices ◽  
Labial Surface

ABSTRACT Objectives To evaluate incisor position and its relationship to alveolar bone in untreated optimal occlusions and in untreated Class II malocclusions. Materials and Methods Fifty-seven lateral cephalograms of individuals with naturally occurring optimal occlusions (mean age = 23 years) were used to assess positions of central incisors and their relationships to alveolar bone. Data were compared to a sample of 57 individuals with untreated Class II malocclusions with concurrent anterior-posterior (AP) skeletal discrepancies (mean age = 16.9 years). Results Significant intergroup differences were found for AP jaw relationship, maxillary alveolar bone thickness, mandibular incisor inclination, maxillary incisor root distance to labial surface of alveolar bone, and mandibular incisor root apex distance to labial surface of alveolar bone. Small differences between females and males existed for several variables. In both samples, maxillary incisor roots were located closer to the labial surface of alveolar process than to the palatal surface by roughly a 2:1 ratio. Mandibular incisor root apices were generally equidistant from the labial and lingual surfaces of the alveolus in the optimal sample but closer to the lingual surface in the Class II sample. Conclusions Maxillary incisors tend to occupy the anterior one-third of the alveolus in untreated individuals, regardless of AP interarch dental relationships or AP jaw relationships. Mandibular incisor root apices tend to be centered within the alveolus in untreated optimal occlusions but are more positively inclined, and their root apices are more posterior in untreated Class II malocclusions.

scholarly journals Three-dimensional alveolar bone assessment of mandibular molars for immediate implant placement: a virtual implant placement study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Haida Chen ◽  
Wei Wang ◽  
Xinhua Gu
Keyword(s):  
Alveolar Bone ◽  
Inferior Alveolar Nerve ◽  
Horizontal Distance ◽  
Second Molar ◽  
Implant Placement ◽  
Computed Tomography Images ◽  
Mandibular Molar ◽  
Immediate Implant ◽  
The Mean ◽  
Molar Region

Abstract Background To elucidate the anatomical features of the mandibular molar region to allow safe immediate implant placement. Methods Cone-beam computed tomography images of 150 patients (600 teeth) were reviewed retrospectively. The virtual implants were placed in the mandibular first and second molar region. The anatomic structures of the mandible and inter-radicular septum were both categorized into three types. The relationship between implant and inferior alveolar nerve (IAN), and the horizontal distance from the implant surface to the bone wall were analyzed. Variables were compared using a student’s t-test, or Mann–Whitney U test. Results Type U (39.0%) and type S (56.0%) were the most common in the first molar, while type U (67.7%) and type M (54.7%) had the highest prevalence rate in the second molar. The mean distance from the level where the virtual implant was completely surrounded by bone to IAN was 7.06 mm. The mean horizontal widths from the implant to the mesial and distal socket wall were 1.59 mm and 1.89 mm. The widths of the inter-radicular septum and the distances from implant to the buccal and lingual plate on different sections were significantly associated with tooth position (P < .05). Conclusions In the first molar region, the implant is suggested to be placed in the center of the inter-radicular septum, while in the second molar region, the mesial root socket could be considered. Immediate implant placement in the mandibular second molar sockets shows a high risk of IAN injury, lingual perforation, and inadequate primary stability.

Effect of age on alveolar bone turnover adjacent to maxillary molar roots in male rats: A histomorphometric study

2007 ◽  
Vol 52 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Yasuko Misawa ◽  
Toru Kageyama ◽  
Keita Moriyama ◽  
Saburo Kurihara ◽  
Hiroshi Yagasaki ◽  
...  
Keyword(s):  
Bone Turnover ◽  
Alveolar Bone ◽  
Male Rats ◽  
Histomorphometric Study ◽  
Maxillary Molar ◽  
Effect Of Age

Biomechanical analysis of alveolar bone stress around implants with different thread designs and pitches in the mandibular molar area

2011 ◽  
Vol 16 (2) ◽  
pp. 363-369 ◽  
Author(s):  
Ting-Hsun Lan ◽  
Je-Kang Du ◽  
Chin-Yun Pan ◽  
Huey-Er Lee ◽  
Wei-Hao Chung
Keyword(s):  
Alveolar Bone ◽  
Biomechanical Analysis ◽  
Bone Stress ◽  
Mandibular Molar

scholarly journals Influence of magnification and superimposition of structures on cephalometric diagnosis

2015 ◽  
Vol 20 (2) ◽  
pp. 29-34 ◽  
Author(s):  
Leonardo Koerich de Paula ◽  
Priscilla de Almeida Solon-de-Mello ◽  
Claudia Trindade Mattos ◽  
Antônio Carlos de Oliveira Ruellas ◽  
Eduardo Franzotti Sant'Anna
Keyword(s):  
Horizontal Plane ◽  
Intraclass Correlation ◽  
Individual Variability ◽  
Occlusal Plane ◽  
Maxillary Incisor ◽  
Plane Angle ◽  
R Software ◽  
Mandibular Incisor ◽  
Full Face ◽  
Frankfort Horizontal Plane

OBJECTIVE: The purpose of this study was to assess the influence of magnification and superimposition of structures on CBCT-generated lateral cephalometric radiographs (LCR) using different segments of the cranium. METHODS: CBCT scans of 10 patients were selected. Four LCR were generated using Dolphin Imaging(r) software: full-face, right side, left side and center of the head. A total of 40 images were imported into Radiocef Studio 2(r), and the angles of the most common cephalometric analyses were traced by the same observer twice and within a 10-day interval. Statistical analyses included intraexaminer agreement and comparison between methods by means of intraclass correlation coefficient (ICC) and Bland-Altman agreement tests. RESULTS: Intraexaminer agreement of the angles assessed by ICC was excellent (> 0.90) for 83% of measurements, good (between 0.75 and 0.90) for 15%, and moderate (between 0.50 and 0.75) for 2% of measurements. The comparison between methods by ICC was excellent for 68% of measurements, good for 26%, and moderate for 6%. Variables presenting wider confidence intervals (> 6o) in the Bland-Altman tests, in intraexaminer assessment, were: mandibular incisor angle, maxillary incisor angle, and occlusal plane angle. And in comparison methods the variables with wider confidence interval were: mandibular incisor, maxillary incisor, GoGn, occlusal plane angle, Frankfort horizontal plane (FHP), and CoA. CONCLUSION: Superimposition of structures seemed to influence the results more than magnification, and neither one of them significantly influenced the measurements. Considerable individual variability may occur, especially for mandibular and maxillary incisors, FHP and occlusal plane.

scholarly journals Influence of bone anatomical morphology of mandibular molars on dental implant based on CBCT

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Zhuo-lin Kong ◽  
Ge-ge Wang ◽  
Xue-ying Liu ◽  
Zhang-yan Ye ◽  
Dong-qian Xu ◽  
...  
Keyword(s):  
Alveolar Bone ◽  
Statistical Significance ◽  
Alveolar Process ◽  
Cross Sectional ◽  
Basal Bone ◽  
Mandibular Molar ◽  
Anatomical Relationship ◽  
Length Width ◽  
Implant Restoration

Abstract Background To apply CBCT to investigate the anatomical relationship between the mandibular molar and alveolar bone, aimed to provide clinical guidelines for the design of implant restoration. Methods 201 CBCT data were reevaluated to measure height of the alveolar process (EF), width of the alveolar process (GH), width of the basal bone (IJ), the angle between the long axis of the first molar and the alveolar bone (∠a) and the angle between the long axis of the alveolar bone and basal bone (∠b). The angle and width were measured to determine the implant-prosthodontic classification of the morphology in the left lower first molar (36) and right lower first molar (46). All measurements were performed on the improved cross-sectional images. Results EF, GH and IJ were measured as (10.83 ± 1.31) mm, (13.93 ± 2.00) mm and (12.68 ± 1.96) mm for 36, respectively; and (10.87 ± 1.24) mm, (13.86 ± 1.93) mm and (12.60 ± 1.90) mm for 46, respectively. No statistical significance was observed in EF, GH, IJ, ∠a and ∠b between 36 and 46 (all P > 0.05). The morphology was divided into three categories including the straight (68.7–69.2%), oblique (19.9–20.4%) and concave types (11%). Each type was consisted of two subcategories. Conclusions The proposed classification could provide evidence for appropriate selection and direction design of the mandibular molar implant in clinical. The concave type was the most difficult to implant with the highest risk of lingual perforation. The implant length, width, direction required more attention.

scholarly journals Difference in height of maxillary alveolar ridge on edentulous women and dentate women using panoramic radiography

2019 ◽  
Vol 10 (2) ◽  
pp. 1243-1248
Author(s):  
Cek Dara Manja ◽  
Dennis
Keyword(s):  
Panoramic Radiography ◽  
Total Sample ◽  
Mechanical Stimulus ◽  
Average Height ◽  
Alveolar Ridge ◽  
Cross Sectional ◽  
Average Value ◽  
Significant Difference ◽  
The Difference ◽  
The Right

The height of the maxillary alveolar ridge can be measured using panoramic radiography. The decline occurred because the height of the alveolar ridge undergoes slow physiological resorption due to the absence of mechanical stimulus. The purpose of this research is to know the difference and the average height of the maxillary alveolar ridge in edentulous and dentate women using panoramic radiography. This study is an analytical method with a cross-sectional approach. A total sample of 40 women, edentulous and dentate has been measured. Measurements were made by measuring the distance between the lowest point of the infraorbital ridge and alveolar crest maxilla on the incisor point, right and left premolar, right and left molar. A statistical test is done using independent t-test. The results showed that the average value of a dentate women sample is greater than edentulous. The average value obtained by the dentate sample is greatest in incisor point by 37,57mm± 3,34mm and the smallest at the right molar point by 33,87mm ± 2,81mm. The average value obtained by the edentulous sample is greatest in incisor point by 35,30mm ± 2,79mm and the smallest at the right molar point by 31,84mm ± 3,85mm. It can be concluded that there is a significant difference in the height of the maxillary alveolar ridge on an edentulous sample and dentate, except the right molar teeth. The average height of the maxillary alveolar ridge in an edentulous sample is 33,35mm ± 3,43mm, and the dentate sample is 35,66mm ± 3,21mm.

scholarly journals AUTOTRANSPLANTASI GIGI-GIGI IMPAKSI INSISIVUS MAKSILA KANAN DISERTAI KISTA DENTIGEROUS DENGAN PENAMBAHAN GRAFT KOLAGEN KARBONAT APATIT

2018 ◽  
Vol 5 (1) ◽  
pp. 9
Author(s):  
Indah Wulansari ◽  
Maria Goreti Widiastuti ◽  
Prihartiningsih Prihartiningsih
Keyword(s):  
Alveolar Bone ◽  
Dentigerous Cyst ◽  
Apical Part ◽  
Maxillary Incisor ◽  
Carbonate Apatite ◽  
Horizontal Position ◽  
Surgery Patient ◽  
Dentigerous Cysts ◽  
Collagen Graft

Background: Autotransplantation is a surgical movement to reposition teeththat have been erupted, partially erupted or not yet erupted from one place to another in the same individual, either on post-extraction sockets or artifcial sockets made by surgery. Dental folicle from impacted teeth may develope dentigerous cysts that will result in destruction of the jaw bone. There are many factors that influence the success of autotransplantation, one of which is adequate bone support.The purpose of this poster is to present the successful autotransplantation treatment of impacted right maxillary incisor teeth associated with dentigerous cyst and bone support replacement after cyst enucleation using a carbonate apatite collagen graft, GAMACHA®, at RSUP Dr. Sardjito.Case management: A 9-year-old girl, referred to the Oral and MaxillofacialSurgery Department of RSUP Dr. Sardjito with the complaint of right deciduous maxillary incisor persistence. Radiological examination showing persistent of 51 and 52 radices and impaction of teeth 11 and 12 in a horizontal position above radix 53. Also visible radiolucent image with a frm limit around the crown of 11 that supports the image of cyst. This patient performed cyst enucleation under general anesthesia, removal of impacted 11 and 21, followed by an artifcial socket drilling at the alveolar bone that could support all aspects of the root wall although only on the apical part of the tooth root for teeth 11 and 12 placement. Autotransplantation of teeth11 and 12 followed by the application of GAMACHA® and wire fxation, strengthen with acrylic splint.Conclusion: Two years follow up after surgery, patient have no complaintseither from aesthetic or functional and the result of clinical and radiologicalexamination did not found existence of any pathological abnormalities around teeth 11 and 12.

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