Alveolar ridge dimensions in mandibular posterior regions: a retrospective comparative study of dentate and edentulous sites using computerized tomography data

Pramstraller, Mattia; Schincaglia, Gian Pietro; Vecchiatini, Renata; Farina, Roberto; Trombelli, Leonardo

doi:10.1007/s00276-018-2095-0

Cited by 12 publications

(17 citation statements)

References 26 publications

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“…Farina et al [5] reported a more apical position of the ridge, a lower bone width and a more coronal position of the sinus floor compared to dentate sites in the maxilla. In the mandible, a reduced bone height and width was observed compared to the dentate areas [43]. In some cases, the residual ridge volume after healing is insufficient to place dental implants without bone augmentation procedures.…”

Section: Discussionmentioning

confidence: 99%

Contour Changes Following Immediate Placement of Ultra-Wide Implants in Molar Extraction Sockets without Bone Grafting

Hattingh

Weehaeghe

et al. 2020

JCM

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The aim was to evaluate ridge reduction and mucosal recession following immediate placement of ultra-wide implants in molar sockets, without bone grafting. Impressions were taken prior to tooth extraction, 4 months and 1 year after implant placement. The casts were digitized and compared. Mucosal recessions and horizontal ridge reduction were measured. A total of 16 implants were in the maxilla and 11 in the mandible. At the buccal aspect, there was a mean reduction of 0.94 mm after 4 months and 0.89 mm after one year (p = 0.933). At the palatal/lingual aspect, this was 1.09 mm after 4 months and 0.69 mm after 1 year (p = 0.001). After 1 year, a recession of 0.59 mm was measured at the zenith, 1.04 mm at the mesial and 0.98 mm at the distal papilla. The mean midfacial horizontal ridge reduction was 1.23 mm after 4 months and 1.45 mm after 1 year. At the midpalatal/midlingual aspect, the mean horizontal reduction was 1.43 mm after 4 months and 1.16 mm after 1 year. Immediate implant placement without bone grafting in the posterior jaw yields a significant horizontal ridge reduction and minor mucosal recession. Clinicians should anticipate the amount of ridge reduction and consider augmentation at the time of implant placement.

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Section: Discussionmentioning

confidence: 99%

Contour Changes Following Immediate Placement of Ultra-Wide Implants in Molar Extraction Sockets without Bone Grafting

Hattingh

Weehaeghe

et al. 2020

JCM

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“…Therefore, fine nerves and blood vessels disappear due to the lost teeth and absorbed alveolar bone in pathophysiological conditions, such as aging and dental diseases. The existence of tooth conditions generally affects the maintenance of the alveolar bone matrix (Pramstraller et al 2018). Our macroscopic analysis primarily found the fine nerves and blood vessels of the MCB in the dentulous and edentulous samples.…”

Section: Discussionmentioning

confidence: 99%

Characteristics of Mandibular Canal Branches Related to Nociceptive Marker

et al. 2021

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It is difficult to correlate the direction of mandibular canal branches (MCBs) with altered sensation in dental treatments. In contrast, calcitonin gene–related peptide (CGRP) is related to vasodilation, bone formation, and the interaction with the peripheral nervous system. Therefore, we investigated the detailed morphological characteristics of MCBs using cone-beam computed tomography (CBCT) and observation of the CGRP distribution around the MCB. The MCB measurements were evaluated using principal component analysis (PCA) to identify morphological correlations. A total of 168 sides of mandibles from 84 cadavers were analyzed in this study. Most of the MCBs were primarily in the direction of the clock model from X to XI in sagittal sections and XII to I in coronal sections of the mandible. The structure of the MCB was divided into the fine canal branch (60.4%, 223/369), partial branch (24.4%, 90/369), and no canal branch (15.2%, 56/369). PCA indicated that the measurement element with the MCB and its structures were correlated in contrast to tooth factors. Positive CGRP reactions were clearly observed in the no-canal branch group compared to other groups. These data provide useful suggestions for MCB dynamics and information for clinical dental treatment.

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“…Another consistent finding in all included studies, comparing dentate and edentulous RW’s, is the clear reduction in RW after tooth extraction. This reduction was found to be more meaningful in crestal areas of the ridge, where RW reduction exceeds 50% [ 30 , 39 , 59 ]. This finding is in agreement with studies evaluating the effect of buccal cortical bone width on the post extraction horizontal changes [ 18 – 21 ].…”

Section: Discussionmentioning

confidence: 99%

“…Several factors contribute to this high heterogeneity, which are mostly connected to the study population selected in the included studies. Factors, such as possible anatomical difference between males and females [ 31 , 42 , 57 – 59 ], possible age effects (young vs. aged population), as in [ 31 , 38 , 57 ], or ethnic differences [ 29 ], were all found to effect alveolar ridge components, contributing to statistical heterogeneity. Moreover, no information was given in any of the included studies on the healing time following tooth extraction, which is a determinant factor influencing the extent of ridge resorption and the difference between RW in dentate and edentulous state [ 15 , 16 ].…”

Section: Discussionmentioning

confidence: 99%

Quantitative assessment of the jawbone quality classification: A meta-analysis study

Shemtov‐Yona

2021

PLoS ONE

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Aim Bone quality is evaluated using bone density for qualitative classification, a characteristic that may be delicate to evaluate. Contemporary implantology that relies on modern measurement techniques, needs a more quantitative estimate of the bone quality. Materials and methods PubMed and EMBASE databases were searched with no time restriction. Clinical and radiographic studies reporting on alveolar ridge dimensions and its parameters in different areas of the dentate and edentulous jaws were included. A meta-analysis was performed using random effect models to report a combined mean for alveolar ridge and its parameters. Meta regression statistical tests were performed in order to identify differences in those outcome parameters. Results 30 studies were included. The majority of the selected studies (total of 27) used live human subjects and CBCT to analyze alveolar ridge dimensions and its parameters. Using the combined mean obtained from the meta-analysis, a typical portrait of the alveolar ridge was constructed, and a geometrically based quantitative bone classification proposed. The quantitative classification was found to match the existing qualitative classification. Conclusion A geometry-based analysis was constructed that yields valuable insights on the bone type based on its components and on the dynamics of the dentate / edentulous states.

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Alveolar ridge dimensions in mandibular posterior regions: a retrospective comparative study of dentate and edentulous sites using computerized tomography data

Abstract: In the posterior mandible, edentulous sites show a reduced height and bucco-lingual ridge width compared to contralateral dentate sites. Gender seems to have a limited impact on the extent of ridge resorption following the loss of posterior mandibular teeth.

Cited by 12 publications

References 26 publications

Contour Changes Following Immediate Placement of Ultra-Wide Implants in Molar Extraction Sockets without Bone Grafting

Contour Changes Following Immediate Placement of Ultra-Wide Implants in Molar Extraction Sockets without Bone Grafting

Characteristics of Mandibular Canal Branches Related to Nociceptive Marker

Quantitative assessment of the jawbone quality classification: A meta-analysis study

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