Tissue alterations after tooth extraction with and without surgical trauma: a volumetric study in the beagle dog

Fickl, Stefan; Zuhr, Otto; Wachtel, Hannes; Bolz, Wolfgang; Hüerzeler, Markus

doi:10.1111/j.1600-051x.2008.01209.x

Cited by 209 publications

(246 citation statements)

References 20 publications

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“…2A). A horizontal reference line was traced connecting the facial and palatal crest for standardized measurements (Fickl et al, 2008). The point-to-point distance between the 2 surface meshes with the respective angle to the reference line was obtained for each sample, and the vertical and horizontal bone losses were calculated accordingly (Fig.…”

Section: Radiographic Examinationmentioning

confidence: 99%

Ridge Alterations Post-extraction in the Esthetic Zone

et al. 2013

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Section: Radiographic Examinationmentioning

confidence: 99%

Ridge Alterations Post-extraction in the Esthetic Zone

et al. 2013

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“…Since the alveolar bone resorption continues throughout life (Jahangiri et al, 1998), the longer the interval, the greater will be the amount of bone resorption. In addition, it was well established that the elevation of a full-thickness flap might cause crestal alveolar bone loss of about 0.6 mm (Wood et al, 1972), making tooth extraction no longer the sole factor causing alveolar bone resorption (Fickl et al, 2008). This might partially be the reason why studies using the method of flap elevation (Lekovic et al, 1998;Camargo et al, 2000) reported more resorption.…”

Section: Resultsmentioning

confidence: 96%

人类上颌中切牙拔除后牙槽骨外形变化的研究

Wang

2014

J. Zhejiang Univ. Sci. B

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Abstract:The purpose of this study was to apply cone-beam computed tomography (CBCT) to observe contour changes in human alveolar bone after tooth extraction of the maxillary central incisor and to provide original morphological evidence for aesthetic implant treatment in the maxillary anterior area. Forty patients were recruited into the study. Each patient had two CBCT scans (CBCT I and CBCT II), one taken before and one taken three months after tooth extraction of maxillary central incisor (test tooth T). A fixed anatomic reference point was used to orient the starting axial slice of the two scans. On three CBCT I axial slices, which represented the deep, middle, and shallow layers of the socket, labial and palatal alveolar bone widths of T were measured. The number of sagittal slices from the start point to the pulp centre of T was recorded. On three CBCT II axial slices, the pulp centres of extracted T were oriented according to the number of moved sagittal slices recorded in CBCT I. Labial and palatal alveolar bone widths at the oriented sites were measured. On the CBCT I axial slice which represented the middle layer of the socket, sagittal slices were reconstructed. Relevant distances of T on the sagittal slice were measured, as were the alveolar bone width and tooth length of the opposite central incisor. On the CBCT II axial slice, which represented the middle layer of the socket, relevant distances recorded in CBCT I were transferred on the sagittal slice. The height reduction of alveolar bone on labial and palatal sides was measured, as were the alveolar bone width and tooth length of the opposite central incisor at the oriented site. Intraobserver reliability assessed by intraclass correlation coefficients (ICCs) was high. Paired sample t-tests were performed. The alveolar bone width and tooth length of the opposite central incisor showed no statistical differences (P<0.05). The labial alveolar bone widths of T at the deep, middle, and shallow layers all showed statistical differences. However, no palatal alveolar bone widths showed any statistical differences. The width reduction of alveolar bone was 1.2, 1.6, and 2.7 mm at the deep, middle, and shallow layers, respectively. The height reduction of alveolar bone on labial and palatal sides of T both showed statistical differences, which was 1.9 and 1.1 mm, respectively.

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“…Это дает воз-можность перемещать ВКП в переднезаднем направле-нии, особенно важно в тех клинических наблюдениях, когда на ней имеется углубление или вдавление корти-кального слоя в форме скоса вниз [73]. Подобная дефор-мация обычно вызвана чрезмерной резорбцией кости на этом уровне и отмечается при обнажении корней зубов, лунки которых после удаления не заполнялись ОПМ с це-лью регенерации [44,66]. Таким образом, посредством данного вмешательства становится возможным удлине-ние и/или расширение АГ.…”

Section: стоматология 2 2015unclassified