Anatomical Study of the Pterygomaxillary Area for Implant Placement: Cone Beam Computed Tomographic Scanning in 100 Patients

Rodríguez, Xavier; Rambla, Federico; Lopez, Luis De Marcos; Méndez, Víctor; Vela, Xavier; García, Jaime Jiménez

doi:10.11607/jomi.3173

Cited by 26 publications

(16 citation statements)

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“…25 , the height of the pterygopalatine suture has been reported to be 13.1 mm, which is in concordance with the measurement in our study, 12.5 mm (SD 1.8 mm). Studies have suggested that implants measuring 13.0 to 18.0 mm could be appropriated to ensure an engagement in the cortical bone of the pterygoid process 17,26 .…”

Section: Discussionmentioning

confidence: 99%

Three-dimensional descriptive study of the pterygomaxillary region related to pterygoid implants: A retrospective study

Salinas-Goodier

Rojo

Murillo-González

et al. 2019

Sci Rep

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The objective of this study was to analyze three-dimensionally the morphological characteristics of the pterygomaxillary region related to pterygoid implants. Volume, height, width and bone density were studied in relation to age, sex and dental status. This retrospective observational study analyzed the CBCT of 52 hemi-maxillas three-dimensionally (females n = 28, males n = 24; dentate = 31, edentulous = 21). Patients were exposed between September 2009 and October 2014, and data collection was performed between November 2015 and May 2016. Bone density, volume, height and width were analyzed in various locations of the maxilla and pterygoid process, and the variables age, gender and dental status patients were compared. The results show that the mean width of the pterygomaxillary joint was 7.5 mm (SD 1.00 mm), mean height was 12.51 mm (SD 1,82 mm) and mean volume was 321.7 mm3 (SD 142.02 mm3). Statistically significant differences between dentate and edentulous patients were found, showing a higher osseous density in dentate patients in the pterygoid process (758.2, SD 106.8, 95% CI 729.2 to 787.3 GSD - Gray Scale Density - compared to 689.9, SD 107.3, 95% CI 660.8 to 719.1 GSD; P = 0.022). In the maxilla, density was statistically significant lower in female subjects (571.0, SD 74.1, 95% CI 594.9 to 645.4 GSD) than in male subjects (620.2, SD 93.8, 95% CI 594.4 to 645.4 GSD, P = 0.047). In conclusion, due to the significant variation in the morphological characteristics of the pterygomaxillary region among subjects, personalized pre-surgical radiological assessment should always be performed. Gender, age and dental status are critical factors as they significantly affect bone density in this region.

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Section: Discussionmentioning

confidence: 99%

Three-dimensional descriptive study of the pterygomaxillary region related to pterygoid implants: A retrospective study

Salinas-Goodier

Rojo

Murillo-González

et al. 2019

Sci Rep

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“…The inclusion criteria were: English and Spanish language; studies in humans; studies reporting implants in the pterygoid, pterygomaxillary, or maxillary tuberosity regions; studies with at least 1 year of follow-up; clinical cases with a minimum of 10 patients; randomized controlled trials (RCTs) and prospective studies; retrospective and prospective studies. The following definition of pterygoid implant was considered: an implant inserted through the maxillary tuberosity, engaging with the dense cortical bone formed by the pyramidal process of the palatine bone and the pterygoid laminae of the sphenoid bone 8,9,19 ; implant length of minimum 13 mm and able to effectively reach the pterygoid plate 6,10,11,13 . The key words: "pterygoid implants," "pterygomaxillary implants," "pterygoid plate implants," and "tuberosity implants".…”

Section: Methodsmentioning

confidence: 99%

“…Bone graft procedures, such as maxillary sinus lifting and onlay/inlay grafts, have also been used to address insufficient bone volume in this region [6][7][8][9][10] . There are few studies in the literature evaluating pterygoid implant survival rates in short and long term follow-up studies [11][12][13] . Although a definition of pterygoid implants is provided in the glossary of Oral and Maxillofacial Implants (GOMI), as an "implant placed through the maxillary tuberosity and into the pterygoid plate", several studies in the literature have incorrectly included implants inserted into the tuberosity or the pterygomaxillary region as pterygoid implants 18 .…”

Section: Introductionmentioning

confidence: 99%

Tubero pterygoid implants- a boom for atrophied maxillary ridges

Jamdade

Venugopal

Behera³

et al. 2022

ijhs

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Introduction: Dental prosthetic rehabilitation based on Osseo integrated implants is a well-established and highly predictable treatment modality. Hence we aimed to systematic literature review to analyze clinical outcomes of tubero-pterygoid / Pterygoid implant for the treatment of patients with atrophic posterior maxillae and to provide clinical recommendations for this dental implant technique. Material and methods: Online data was collected from the search engines of EBSCO, Pubmed, Google Scholar, Scopus to identify literature presenting clinical outcomes of tubero-pterygoid implants in the treatment of patients with atrophic posterior maxillae. The study articles were collected that from Jan 1999 to Feb 2021. Based on the PRISMA guidelines the meta analysis was performed. Results: From 331 only 6 were finalized. All studies were retrospective in nature and were classified with a poor level of evidence. A total of 634 patients received 1.893 tubero- Pterygoid implants, with a mean implant survival rate of 94.87%. The mean prevalence of implant failure was 0.056 with a 95% CI of 0.04 to 0.077. Conclusion: It can be concluded that tubero-pterygoid implants can be successfully used in patients with atrophic posterior maxilla.

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“…Several muscles attach to or operate via, the maxillary tuberosity and the pterygoid process of the sphenoid bone, including the buccinator, the pterygoid muscles, levator veli palatini (levator palati), and tensor veli palatine (tensor palati) [32]. Likewise, the pterygoid hamulus mimics Archimedean mechanical systems, having a pulley-like structure for the tensor palati, while the hamulus itself anchors a critical mechanical structure, the pterygomandibular raphe (pterygomandibular ligament) [32,33]. Besides, several notable neurovascular structures exist in the vicinity of the pterygoid process, primarily the mandibular branch of the trigeminal nerve, the middle meningeal artery, nervus spinosus, the petrosal nerves, as well as the neurovascular elements of the vidian canal [32,33].…”

Section: K-means and Hierarchical Cluster Analysismentioning

confidence: 99%

“…Likewise, the pterygoid hamulus mimics Archimedean mechanical systems, having a pulley-like structure for the tensor palati, while the hamulus itself anchors a critical mechanical structure, the pterygomandibular raphe (pterygomandibular ligament) [32,33]. Besides, several notable neurovascular structures exist in the vicinity of the pterygoid process, primarily the mandibular branch of the trigeminal nerve, the middle meningeal artery, nervus spinosus, the petrosal nerves, as well as the neurovascular elements of the vidian canal [32,33]. Accordingly, the current study is of prime importance for medicine, surgery, and biomimetics.…”

Section: K-means and Hierarchical Cluster Analysismentioning

confidence: 99%

Unification of frequentist inference and machine learning for pterygomaxillary morphometrics

et al. 2021

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Background:The base of the skull, particularly the pterygomaxillary region, has a sophisticated topography, the morphometry of which interests pathologists, maxillofacial and plastic surgeons. The aim of the study was to conduct pterygomaxillary morphometrics and test relevant hypotheses on sexual and laterality-based dimorphism, and causality relationships. Materials and methods:We handled 60 dry skulls of adult Asian males (36.7%) and females (63.3%). We calculated the prime distance D [prime] for the imaginary line from the maxillary tuberosity to the midpoint of the pterygoid process between the upper and the lower part of the pterygomaxillary fissure, as well as the parasagittal D [x-y inclin.] and coronal inclination of D [x-z inclin.] of the same line. We also took other morphometrics concerning the reference point, the maxillary tuberosity.Results: Significant sexual as well as laterality-based dimorphism and bivariate correlations existed. The univariate models could not detect any significant effect of the predictors. On the contrary, summative multivariate tests in congruence with neural networks, detected a significant effect of laterality on D [x-y inclin.] (p-value = 0.066, partial eta squared = 0.030), and the interaction of laterality and sex on D [x-z inclin.] (pvalue = 0.050, partial eta squared = 0.034). K-means clustering generated three clusters highlighting the significant classifier effect of D [prime] and its three-dimensional inclination.Conclusions: Although the predictors in our analytics had weak-to-moderate effect size underlining the existence of unknown explanatory factors, it provided novel results on the spatial inclination of the pterygoid process, and reconciled machine learning with non-Bayesian models, the application of which belongs to the realm of oral-maxillofacial surgery.

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Anatomical Study of the Pterygomaxillary Area for Implant Placement: Cone Beam Computed Tomographic Scanning in 100 Patients

Cited by 26 publications

References 0 publications

Three-dimensional descriptive study of the pterygomaxillary region related to pterygoid implants: A retrospective study

Three-dimensional descriptive study of the pterygomaxillary region related to pterygoid implants: A retrospective study

Tubero pterygoid implants- a boom for atrophied maxillary ridges

Unification of frequentist inference and machine learning for pterygomaxillary morphometrics

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