Three‐dimensional observation of pulp cavities in the maxillary first premolar tooth using micro‐CT

Oi, Takeshi; Saka, Hideki; Ide, Yoshinobu

doi:10.1111/j.1365-2591.2004.00757.x

Cited by 87 publications

(62 citation statements)

References 14 publications

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“…MCT is non-destructive and a very accurate and useful tool with which to study external and internal tooth anatomy. Parallel findings have been previously reported using MCT to study external and internal tooth morphologies (30,31) and periradicular bone destruction (32,33). Moreover, our current technique overcomes the shortcomings of previously reported techniques (16,22).…”

Section: Discussionsupporting

confidence: 69%

Microcomputed tomographic analysis of the furcation grooves of maxillary first premolars

Al-Shahrani¹

2013

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SummaryObjectives. The aims of this study were to conduct a morphometric analysis on the buccal furcation grooves in freshly extracted bifurcated maxillary first premolars (MFPs) and to correlate all anatomical measurements using microcomputed tomography. Materials and Methods. Twenty-three human MFPs with bifurcated canals were selected for this study. The specimens were analyzed with microcomputed tomography. The length, the beginning, and the ending of the grooves were measured. The minimum cross-sectional canal wall thickness in the grooves was located, and the width of the dentin thickness was calculated. All measurements were recorded and statistically analyzed. Results. The concavity of the grooves begins before the bifurcation site in 9/23 samples and after the bifurcation in 56.5% of samples. The groove length varied between 1.1-9 mm; the cross-sectional area with minimum palatal dentin thickness was 0.78±0.14 mm, which was located at a mean distance of 7.1 mm from the cementoenamel junction (CEJ) and 1.38 mm from the furcation. Conclusions. The presence of the furcation grooves in the palatal aspects of the buccal roots of the MFPs was 100%. The length, depth, location, and width of the dentin thickness of the grooves varied in relation to tooth length, bifurcation, and CEJ. These parameters should be taken into consideration before any endodontic or restorative procedures are performed. Reducing dentin width too vigorously by intracanal instrumentation can predispose to vertical root fractures or perforations; if a post cannot be avoided, it should not extend 6.5 mm from the CEJ.

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Section: Discussionsupporting

confidence: 69%

Microcomputed tomographic analysis of the furcation grooves of maxillary first premolars

Al-Shahrani¹

2013

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“…Studies using the micro-CT have started to be used in many fields of clinical dentistry. [13][14][15][16][17][18][19][20][21][22] It is thought to be especially useful in studying the morphology of pulp cavity which can not be directly observed by the naked eye. Two-dimensional image obtained from the micro-CT distinguishes the difference in level of calcification as difference in X-ray translucency.…”

Section: Discussionmentioning

confidence: 99%

Three-dimensional analysis of pulp chambers in maxillary second deciduous molars

Amano

Agematsu

Abe

et al. 2006

Journal of Dentistry

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Objective. The purpose of this study was to clarify the positional relationship between the crown contour and the pulp chamber using micro-CT system for restorations of maxillary second deciduous molar.Methods. Five maxillary second deciduous molar teeth each from the deciduous dentition and the mixed dentition periods were used. The positional relationship between the crown contour and pulp cha mber was 3-dimensionally observed by micro-CT. In addition, the thickness of the dentin at each of the pulp horns and the volume ratio of the pulp chamber against the whole crown were measured.Results. In relationship to the crown contour and the pulp cha mber, the pulp horn of the mesiobuccal cusp showed greatest protrusion and eminent swelling of its mesial wall in both the deciduous dentition and the mixed dentition periods. Furthermore, the pulp chamber was shifted to the mesial side. The volume ratio of the pulp chamber to the whole crown, the ratio in the mixed dentition period showed to be significantly smaller than in the deciduous dentition period. The dentin thickness at the mesiobuccal pulp horn was the thinest.Conclusions. These results suggest that in preparation of cavities in maxillary second deciduous molars, care is necessary not to expose of the mesiobuccal pulp horn.Especially, the mesial wall of the mesiobuccal pulp horn should be noted.3

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“…Oi et al 14) reported three-dimensional morphological change with age in the pulp chamber of maxillary first premolars by observing and calculating the volume ratio of the pulp chamber and root bifurcation of the root cavity. Iwaka 8) also performed the same research using mandibular first molars as samples.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional Observation of Decrease in Pulp Cavity Volume Using Micro-CT: Age-related Change

Agematsu

Someda

Hashimoto

et al. 2010

Bull. Tokyo Dent. Coll.

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We investigated three-dimensional decrease in the volume of the pulp chamber caused by age-related secondary dentin formation using micro-CT and evaluated the applicability of the results to evaluation of age taking into account sex, age and tooth type. Decrease was slightly higher in females than in males, and a higher correlation between decrease and aging was observed in females. A comparison between age-groups revealed that decrease progressed between the fifties and sixties in males, and the forties and fifties in females. A stronger correlation between aging and decrease was observed in the mandibular central incisors than in the mandibular second premolars. This correlation was higher than other correlations between sexes and age-groups.

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Three‐dimensional observation of pulp cavities in the maxillary first premolar tooth using micro‐CT

Abstract: Morphological features of the pulp cavity of maxillary first premolar teeth in different age groups were observed three dimensionally using micro-CT. Decreases in pulp cavity size and shape with age were clarified using a three-dimensional technique.

Cited by 87 publications

References 14 publications

Microcomputed tomographic analysis of the furcation grooves of maxillary first premolars

Microcomputed tomographic analysis of the furcation grooves of maxillary first premolars

Three-dimensional analysis of pulp chambers in maxillary second deciduous molars

Three-dimensional Observation of Decrease in Pulp Cavity Volume Using Micro-CT: Age-related Change

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