[The modified lip-tooth-ridge classification: a guide for edentulous maxillary arches]

Area of Science:

• Dentistry
• Oral Surgery
• Prosthodontics

Background:

• Maxillary edentulous jaws present challenges for dental implant placement due to varying bone dimensions.
• Accurate classification is crucial for selecting appropriate implant-supported prostheses or alternative treatments.

Purpose of the Study:

• To introduce and validate the modified lip-tooth-ridge (MLTR) classification system for maxillary edentulous jaws.
• To correlate MLTR classes with suitable prosthetic solutions, including implant-supported options and conventional dentures.

Main Methods:

• The MLTR classification categorizes jaws into three main classes based on width and height of the alveolar ridge.
• Class I indicates sufficient bone for fixed prostheses, Class II for fixed-detachable, and Class III for zygomatic implants or dentures.
• Class I is further subcategorized based on vertical bone deficiency for conventional or hybrid implant prostheses.

Main Results:

• The MLTR classification effectively guides the selection of prosthetic treatment for edentulous maxillas.
• Class I patients are candidates for fixed implant-supported prostheses, with subcategories determining crown-and-bridge or hybrid prosthesis suitability.
• Class II patients are suited for fixed-detachable prostheses, while Class III requires zygomatic implants or traditional complete dentures.

Conclusions:

• The MLTR classification system provides a reliable framework for assessing maxillary bone availability for dental implants.
• It aids clinicians in determining implant suitability, choosing between fixed or removable dentures, and optimizing treatment planning.
• Utilizing the MLTR classification can reduce complications and enhance the long-term success of prosthetic rehabilitation.