*Implant-Retained Maxillary and Mandibular Overdentures - A Solution for Completely… DOI: http://dx.doi.org/10.5772/intechopen.99575*

in edentulous dental arches together with the desire to improve esthetic appearance [49]. Consequently, they are indicated in patients suffering from severe morphological destruction of denture supporting regions with significant loss of denture retention and stability (**Figures 2** and **3**), those with poor oral muscular coordination and low

#### **Figure 3.**

*Three-dimensional measurement of mandibular bone in completely edentulous patient. The resorption of the mandibular residual arch is not so progressive, therefore the placement of 4 implants in the frontal region is indicated.*

#### **Figure 4.** *Vestibular view of 2 implant-retained mandibular overdenture.*

tolerance of soft underlying tissues, having parafunctional habits increasing soreness and instability of the conventional restorations or severe gag reflexes [50].

This type of removable prosthodontic rehabilitation is also strongly recommended in patients with unrealistic conventional prosthodontic expectations and those having psychological problems in wearing removable dentures, even when adequate retention and stability are present in the function [50].

This type of implant-prosthodontic rehabilitation offers several advantages such as need for less implants resulting in lower component costs and less expensive treatments for the patient, easy handling and home care maintenance, achieving extremely high level of facial esthetics by labial acrylic flanges and denture teeth replacing missing bone structure and avoiding parafunctions by removing dentures at night (**Figures 4** and **5**).

The results of the trial reported in Feine et al. and Grandmont et al. suggested that many patients having the chance to compare both fixed and removable

**Figure 5.** *Oral view of 2 implant-retained mandibular overdenture.*

**Figure 6.** *Individual tray, functional imporession and laboratory analogs for 4 implant-retained mandibular overdenture.*
