Volumetric tomography – a new tomographic technique for panoramic units

Cederlund, Andreas; Kalke, Martti; Welander, Ulf

doi:10.1259/dmfr/16577933

Cited by 10 publications

(7 citation statements)

References 2 publications

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“… 2 , 7 , 8 , 10 , 11 , 15 Others have compared the images obtained in panoramic radiographs and tomographies evaluating biomaterials, proximity of the third molar to the lower alveolar nerve and external root resorption. 3 , 6 , 18 , 20 , 22 The results confirm that cone beam computed tomography (CBCT) has better image quality, better measurement accuracy, less distortion and, mainly, allows the visualization of the region of interest (ROI) without overlapping other structures. 1 , 6 , 16 , 17 - 20 , 25 …”

Section: Introductionmentioning

confidence: 70%

Tomographic late evaluation of xenogeneic bone grafts in sockets of impacted third molars

et al. 2018

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It is necessary to preserve height and thickness of the alveolar bone to facilitate rehabilitation with osteointegratable implants or simply to maintain bone integrity after extraction. Biomaterials associated with resorbable or non-resorbable membranes, when placed in the region of the socket, may contribute to avoid this unwanted reabsorption. Objective The objective of this study was to evaluate the distance of the crest of alveolar ridge to the cementoenamel junction (CEJ) of the lower second molars and the bone density of the third molar socket filled with Gen-Tech®, 5 years after an exodontia using cone beam computed tomography (CBCT) to visualize the central region of the sockets, without overlapping of the buccal and lingual cortical bones.Material and Methods A total of 12 individuals from an initial group of 39 patients submitted to extraction of the unruptured lower third molars and grafting of an association of inorganic bovine bone matrix, organic bovine bone matrix, collagen and bone morphogenetic proteins (BMP) (Gen-Tech®) on one side and the contralateral sockets filled only by clot, returned to control after 5 years, and were submitted to CBCT. The distance from the crest of alveolar bone to the CEJ and the bone density (BD) were measured using the i-CAT Vision Software.Results The results showed that the distance from the crest of alveolar bone to the CEJ in the control group was similar to that observed before the exodontia; in the experimental group, this distance was smaller. Considering the BD measurement, a significantly higher density was observed in the experimental group (p<0.05).Conclusion Part of the biomaterial was not absorbed and allowed the stability of the evaluated parameters after 5 years, being able to be used as a bone substitute in the socket.

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Section: Introductionmentioning

confidence: 70%

Tomographic late evaluation of xenogeneic bone grafts in sockets of impacted third molars

et al. 2018

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“…So, the objective of this study was to evaluate the alveolar bone thickness in hyperdivergent and hypodivergent facial patterns as compared to normal growth pattern individuals at different heights in maxillary anterior region as a safe zone for placement for mini-screws implants using 3D Volumetric Tomography. (7)…”

Section: B a C K G R O U N Dmentioning

confidence: 99%

Radiographic Evaluation of Alveolar Bone Dimensions in the InterRadicular Area between Maxillary Central Incisors as “Safe Zone” for the Placement of Miniscrew Implants in Different Growth Patterns- A Digital Volume Tomographical Study

Ghoshal¹,

Kamble²,

Shrivastav³

et al. 2019

jemds

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A B S T R A C T BACKGROUNDObtaining absolute anchorage with miniscrew has gained momentum in clinical orthodontics as rigid anchorage modality. Determining an ideal anatomical location for mini-implant placement is very important for its successful use. We wanted to evaluate the alveolar bone thickness in hyperdivergent and hypodivergent growth patterns compared to normal growth pattern individuals at different heights in between maxillary central incisors as a safe zone for placement of miniscrew implants. METHODS3-dimensional Digital Volumetric Tomography of 45 individuals was done who were in 3 groups-hypodivergent, hyperdivergent and normal growth patterns. The images were generated, analysed by Kodak 3D viewer, 2.2 version software and oriented in three planes -transverse, horizontal and vertical at 3 mm, 5 mm and 7 mm heights respectively. RESULTSHorizontal bone thickness has tendency to increase from CEJ to apex. It was also increased in hypodivergents and individuals with normal growth pattern. Transverse bone thickness for mini-implant placement was found more at 7 mm height in hypodivergent, at 5 mm and 7 mm in hyperdivergent. Vertical bone was found to be highest in hyperdivergent individuals. CONCLUSIONSThere is difference in cortical bone thickness in different growth pattern individuals. Hence growth pattern must be taken into account while placing the mini screw implants.

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“…In addition to the standard panoramic projection described earlier, most panoramic machines also offer special projection techniques for distinct anatomical targets, for instance, the TMJs, the sinuses, and transverse 'cuts' (or views) of portion of the jaw, often based upon limited and modified 'narrow beam rotational radiography' or on tomosynthesis (Cederlund et al, 2009;McDavid et al, 1990;Welander et al, 2004).…”

Section: Mid-sagittal Planementioning

confidence: 99%

Oral and Maxillofacial Radiology

Molteni¹

2014

Comprehensive Biomedical Physics

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Volumetric tomography – a new tomographic technique for panoramic units

Abstract: The new VT method may be employed when tomographic examinations are required for dental clinical work.

Cited by 10 publications

References 2 publications

Tomographic late evaluation of xenogeneic bone grafts in sockets of impacted third molars

Tomographic late evaluation of xenogeneic bone grafts in sockets of impacted third molars

Radiographic Evaluation of Alveolar Bone Dimensions in the InterRadicular Area between Maxillary Central Incisors as “Safe Zone” for the Placement of Miniscrew Implants in Different Growth Patterns- A Digital Volume Tomographical Study

Oral and Maxillofacial Radiology

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