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Journal of Stomatology Oral and Maxillofacial Surgery
Volume 120, n° 2
pages 99-105 (avril 2019)
Doi : 10.1016/j.jormas.2018.12.006
Received : 22 June 2018 ;  accepted : 10 December 2018
Original Articles

Computed tomography-aided descriptive analysis of maxillary and mandibular atrophies
 

Carolina Sbordone a, , Paolo Toti b, c , Bruno Brevi d , Ranieri Martuscelli e , Ludovico Sbordone f, g , Federica Di Spirito h,
a Department of Radiology, School of Medicine, University of Molise, Via Giovanni Paolo II, Contrada “Tappino” 86100, Campobasso, Italy 
b Private Practice, Via Provinciale 87B, 55041, Camaiore (Lucca), Italy 
c Department of Surgery, University of Pisa, Via Paradisa 2, 56124 Pisa, Italy 
d Complex Operating Unit of Maxillo-Facial Surgery, Azienda Ospedaliero-Universitaria Pisana, Via Paradisa 2, 56100 Pisa, Italy 
e Department of Neurosciences, Reproductive and Odontostomatological Sciences, School of Medicine and Surgery, University of Naples “Federico II”, Via S. Pansini 5, 80131, Naples, Italy 
f Dept. of Medicine, Surgery and Dentistry “Schola Medica Salernitana” School of Dentistry, University of Salerno, and Complex Operating Unit of Odontostomatology, Head and Neck Clinical Department, Azienda Ospedaliero-Universitaria San Giovanni di Dio e Ruggi d’Aragona, Via S. Allende, 84081, Baronissi (Salerno), Italy 
g Department of Surgery, University of Pisa, Complex Operating Unit of Odontostomatology and Implantology, Head and Neck Clinical Department, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy 
h Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana” School of Dentistry, University of Salerno and Complex Operating Unit of Odontostomatology, Head and Neck Clinical Department, Azienda Ospedaliero-Universitaria San Giovanni di Dio e Ruggid’Aragona, Via S. Allende, 84081, Baronissi (Salerno), Italy 

Corresponding author at: Department of Medicine, Surgery and Dentistry “Schola Medica Salernitana” School of Dentistry, University of Salerno, Via S. Allende, 84081, Baronissi (Salerno), ItalyDepartment of Medicine, Surgery and Dentistry “Schola Medica Salernitana” School of Dentistry, University of SalernoVia S. AllendeBaronissi (Salerno)84081Italy
Abstract
Introduction

The aim of the present retrospective chart review was to analyze by Computed Tomography (CT) scan technique the degree of maxillomandibular atrophies, searching for differences between totally- and partially-edentulous subjects, and possibly identify and classify maxillomandibular atrophy staged patterns for implant planning in both totally- and partially- edentulous jaws.

Material and Methods

CT scans of 89 mandibles and 77 maxillae from 111 patients were classified according to six different patterns of residual ridge resorption and to two different groups of edentulism (totally- and partially-edentulous). Maxillomandibular absolute linear dimensions were calculated and results compared for statistically significant differences by Wilcoxon tests.

Results

Maxillomandibular CT cross-section interpretation showed different patterns of linear bone remodelling (height values) between the two groups of edentulism joined with specific positions in the maxilla or mandible. The judgment of the investigator was uncertain in the analysis of the mandibular posterior areas with similar percentages for both totally- and partially-edentulous groups (12.5% and 11.5%, respectively).

Discussion

The 3D analysis is self-explanatory and easy to apply, aided by CT scans. The measurements between the referring planes and inviolable anatomical structures (nasal floor NFD, lower border of mandible LBD, inferior alveolar nerve AND, and sinus floor SFD), showed that class III may not guarantee an optimal implant placement, especially in the totally-edentulous group, due to a major degree of pneumatisation.

The full text of this article is available in PDF format.

Keywords : Full edentulism, Maxillomandibular atrophy, Partial edentulism, Radiographic analysis, Residual ridge resorption




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