Dento‐alveolar measurements and histomorphometric parameters of maxillary and mandibular first molars, using micro‐CT

Theye, Charlotte E. G.; Hattingh, André; Cracknell, Tamsin J.; Oettlé, Anna Catherina; Steyn, Maryna; Vandeweghe, Stefan

doi:10.1111/cid.12616

Cited by 7 publications

(15 citation statements)

References 44 publications

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“…Most of the afore mentioned literature relates to the anterior maxilla, where the labial bone thickness is thin. However, Theye et al [56] measured the bony dimensions at first molar sites and found that 20.8% of mandibular and 62.18% of maxillary first molars have a buccal cortical wall of less than 1 mm thick.…”

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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“…As discussed earlier, the molar socket anatomy is complex and primary stability is often difficult to achieve, even with normal wide diameter implants. Theye et al used micro CT to measure the dimensions of molar sockets and reported a mean width of 8.80 mm for the mandibular and 7.05 mm for the maxillary molars in the mesio‐distal direction, and in the buccolingual direction 7.24 mm and 11.58 mm for the mandibular and maxillary molars respectively.…”

Section: Discussionmentioning

confidence: 99%

“…18,19 As discussed earlier, the molar socket anatomy is complex and primary stability is often difficult to achieve, even with normal wide diameter implants. Theye et al 16…”

Section: Discussionmentioning

confidence: 99%

“…12,13 Based on cone beam CT images, the dimensions of molar sockets are suitable for the placement of wide diameter implants, but the maximal implant length will be limited to avoid perforation of the sinus floor and the inferior alveolar nerve. [14][15][16] Wide diameter implants were initially introduced in the late 90's as a "rescue implant", if standard diameter implants could not reach primary stability or had to be replaced. 8 Early studies reported failure rates as high as 20%, probably due to poorly understood indications, different surgical protocols, poor bone quality and the associated learning curve.…”

Section: Introductionmentioning

confidence: 99%

“…A more sensible approach might be to place a single wide diameter implant in the inter‐radicular bone and in the center of the multi‐rooted socket, to prevent the unwanted compromises of the aforementioned options . Based on cone beam CT images, the dimensions of molar sockets are suitable for the placement of wide diameter implants, but the maximal implant length will be limited to avoid perforation of the sinus floor and the inferior alveolar nerve …”

Section: Introductionmentioning

confidence: 99%

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A retrospective study on ultra‐wide diameter dental implants for immediate molar replacement

Hattingh

Bruyn

Vandeweghe

2019

Clin Implant Dent Rel Res

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Background Although immediate implant placement for single rooted teeth is well documented, the prognosis of ultra‐wide implants in molar sockets lacks data. Purpose To evaluate the outcome of ultra‐wide implants, immediately placed in molar sockets. Materials and Methods Patients treated with immediate ultra‐wide diameter implants that have been in function for at least 40 months, were invited for a clinical evaluation. A radiograph was taken to measure marginal bone loss. Probing depths as well as plaque and bleeding scores were recorded at the implant and contralateral tooth. Crown and soft tissue dimensions were measured, and patients filled out an OHIP‐14 questionnaire. Results Eighty‐five out of 230 patients (37%) were evaluated. Twenty‐eight implants received a bone graft to fill the residual space. Average bone loss was 0.19 mm after a mean follow‐up of 67 months, with no significant changes over time (P = 0.170). There was no significant difference in bone loss between the maxilla and mandible (P = 0.797), male or female (P = 0.128), smoking and nonsmoking (P = 0.219), grafted and nongrafted sites (P = 0.098), or the different bio‐types (P = 0.404). The distal papillae were significantly higher if a contact point was present (P = 0.002). Plaque was more frequent at the contralateral tooth (P < 0.001), but more bleeding on probing was observed around the implants (P = 0.021). Overall, 63.5% of the patients experienced no problems at all. Conclusion Ultra‐wide diameter implants for immediate molar replacement demonstrate little bone loss and stable soft tissue conditions over a 4 to 7‐year period.

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Investigating the dentoalveolar complex in archaeological human skull specimens: Additional findings with large volume micro‐CT compared to standard methods

Gurr

Higgins

Henneberg

et al. 2023

Intl J of Osteoarchaeology

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Archaeological investigation of the dentoalveolar complex in situ within a human skull requires detailed measurements using non-invasive techniques. Standard macroscopic and radiographic methods have limitations but large volume micro-computed tomography (LV micro-CT) scanning has the potential to acquire data at high resolution in microns. In this study, archaeological specimens are analyzed using three-dimensional data visualization software from LV micro-CT scans with the aims of (1) determining whether LV micro-CT can act as a single technique to provide detailed analysis of the dentoalveolar complex and (2) how findings from the LV micro-CT technique compare with standard methods. These aims are explored by measuring a range of human skull specimens from a rare archaeological sample requiring non-invasive methods, for multiple dental and alveolar bone health categories. The LV micro-CT technique was the only method to provide a full range of detailed measurements across all categories studied. A combination of macroscopic and radiographic techniques covered a number of categories, but the use of multiple methods was more time consuming, did not provide the same level of accuracy, and did not include all measurements. There were high levels of reproducibility for intra-operator scoring and good inter-operator agreement from four operators with one operator whose results were outliers. As a further investigation of the potential of the LV micro-CT technique, an additional individual, a fragile, fragmented skull of an infant was studied. This investigation confirms the value of LV micro-CT scanning as a non-invasive, accurate, single technique for the extensive analysis of the dentoalveolar complex within archaeological skulls, which also allows the relationship of different tissues to be studied in situ.

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Dento‐alveolar measurements and histomorphometric parameters of maxillary and mandibular first molars, using micro‐CT

Cited by 7 publications

References 44 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

A retrospective study on ultra‐wide diameter dental implants for immediate molar replacement

Investigating the dentoalveolar complex in archaeological human skull specimens: Additional findings with large volume micro‐CT compared to standard methods

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