Skip to main content
icon-treatment_guides_article
Treatment guidelines

Existing prosthesis

Key points

  • Examination of existing dentures provides invaluable information on patients’ perceptions of teeth, soft tissue esthetics and facial vertical dimension support
  • Modifying old dentures enables the patient to assess how a previous denture experience can be optimized with or without implant therapy
  • Implant therapy offers additional treatment options for both adaptive and maladaptive edentulous patients

Existing dentures - important information

Examination of existing dentures provides invaluable information on patients’ perceptions of teeth and soft tissue esthetics, including facial vertical dimension support. It also informs clinicians regarding their patients’ overall denture wearing experience, whether it was an adaptive or an unadaptive one.

Adaptive patients

A prosthetically adaptive denture offers important guidance to a planned optimization of a new prosthodontic intervention with or without implant therapy. The guidance includes arch form, occlusal plane orientation, relationship of the anterior teeth to the lips, denture base extensions, flange thickness and contours and prosthetic teeth wear patterns.

An evaluation of the existing denture`s esthetic merits - specifically teeth arrangement, size and color - can also be completed by studying any available previous dentures and old photographs.

A preliminary clinical esthetic outcome can be imagined from improved circum-oral, cheek and vertical facial support achieved by employing soft peripheral waxes on flanges, provisional tissue conditioner, relines, trial teeth arrangements and use of tooth-colored auto-polymerizing resins to improve occlusal schemes. Provisional modifications in old dentures enable the patient to assess how a previous adaptive denture experience can be enriched with a new prosthodontic prescription with or without implant therapy.

The existing dentures can also be used during implant-based therapy to fabricate drill guides.

Maladaptive patients

Maladaptive denture patients also require this protocol to address some aspects of their denture wearing experience. However, their chronic inability to wear dentures results from a complex etiological mix of morphological, physiological and psychological determinants; and the preliminary protocol will only partially alleviate their concerns. Typical signs and symptoms found in these patients include:

  • Severe morphological compromise of the denture-supporting areas that significantly undermines denture retention
  • Poor oral muscular coordination
  • Low tolerance of the supporting mucosal tissues
  • Parafunctional habits leading to recurrent soreness and instability of the prosthesis
  • Unrealistic functional prosthodontic expectations
  • Active or hyperactive gag reflex elicited by a removable prosthesis
  • Psychological inability to wear a denture, even if adequate denture retention or stability are present

Brånemark’s osseointegration principle enriched treatment options for both types of patients:

  • a fixed implant supported prosthesis
  • an implant-supported overdenture with its convenient, economic implications and enhanced scope for esthetic soft tissue support
shutterstock_153747770_cropped.jpg
Fig 1: "No one should die with their teeth sitting in a glass of water."- Prof. Per-Ingvar Brånemark, Gothenburg

Clinical topics

Diagnosis and treatment planning
Patient assessment

Related articles

icon-treatment_guides_article

Treatment guidelines

A universally accepted definition of ideal occlusion has been elusive. This is because an ideal occlusion can only be defined in broad terms of a physiological range of form and function. Functional aspects of occlusion, rather than specific anatomical...

Biomechanics and occlusion
Patient assessment
icon-treatment_guides_article

Treatment guidelines

The key to understanding maxillo-mandibular jaw relations from a patient-centered treatment point of view is to recognize the inseparable nature of the mandible’s two positions - vertical and horizontal. They can be discussed...

Patient assessment
icon-treatment_guides_article

Treatment guidelines

The recording of patient-specific vertical and horizontal jaw relations is a necessary starting point when planning for the occlusal rehabilitation. They are integral components of the mandible’s centric relation (CR)...

Diagnosis and treatment planning
Patient assessment

Additional internal materials

icon-play

Videos

The lecture gives an overview about the treatment options for edentulous patients from both a surgical and restorative perspective, including aspects of severely resorbed arches. Careful evaluation of the remaining bone substance is essential. Dr Vrielinck reviews the surgical...

Questions

Log in or register to post questions and answers.