I. Disclaimer

This document is intended to be used as a reference for VA and non-VA providers. It is not intended to replace clinical judgment when determining care pathways. These guidelines do not guarantee benefits or constitute medical advice.

Eligibility for VA dental care is defined by statute and is to be provided in accordance with the provisions of existing law and VA regulations, specifically 38 U.S.C. §§1710(c) and 1712, and 38 CFR §§17.160 through 17.166.

II. Dental Clinical Determinations and Indications

1. Indications for Single Unit Implant Crowns and Implant/Abutment Supported Removable Denture (Overdenture)
2. Single unit implant crowns in any one quadrant and implant/abutment supported removable dentures (overdentures) are utilized to restore the structural integrity, functionality, and stability of missing teeth. These may be considered clinically necessary when ANY of the following criteria are met:
   • Single missing tooth with no or minimally restored adjacent teeth, excluding second and third molar sites
   • Single missing first molar when there is no molar distal to the edentulous space
   • Cases where more conservative conventional fixed or removable prostheses have failed, as verified by a professional dental evaluation
   • Enhanced prosthesis stability for full or removable partial dentures (RPDs) when implants are used as strategic abutments 
   • The implant(s) is/are fully osseointegrated and exhibit(s) no mobility

2. Limitations/Exclusions
3. Single unit implant crowns and implant/abutment supported removable dentures (overdentures) are not indicated and therefore considered not clinically necessary when ANY of the following are applicable:
   • Significant medical or dental changes that would affect the ability to maintain the crown or prosthesis
   • Cases where a fixed partial denture (FPD) or RPD may offer better long-term success
   • Veteran or provider preference for a fixed implant prosthesis when a less invasive option exists that adequately restores function
   • Minimal occlusal or structural defects with less than three mm of occlusal vertical dimension loss and no significant functional impairment
   • Severe periodontal disease (Stage III/IV) unless periodontal therapy has been initiated and periodontal condition has been stable for six months
   • Veteran with high-risk caries without behavior modification or adequate preventive measures (requires documentation of good oral hygiene and absence of active infection maintained for six months)
   • Patients with severe bruxism and no compliance with occlusal splints   
   • Restorations provided solely for cosmetic purposes 

For all other conditions or indications not listed in section II.a. of this document, single unit implant crowns and implant/abutment supported removable dentures (overdentures) are considered not clinically necessary due to insufficient evidence of efficacy and safety.

Note: For fixed partial dentures, implant/abutment-supported fixed dentures (hybrid) and for multiple single implants in one quadrant – please refer to the dental Clinical Determination and Indication (CDI) DNT-0006: Complex Restorations of the Dentition with or without Implants.

3. Description of Treatment
   • Single unit implant crowns and implant-supported removable dentures (overdentures) are excellent options for replacing missing teeth or making dentures more stable. For a single unit implant crown, a small metal post (the implant) is placed into the jawbone, which acts like a tooth root. After healing in the bone, a custom-made crown is attached to the implant, either directly or using a connector piece called an abutment. Overdentures are dentures that clip or snap onto implants in the jaw, making the denture more secure and comfortable. They can be removed by the patient to clean, which makes oral hygiene easier. For both procedures, local anesthesia is utilized, and digital scans or molds are used to make sure the fit is correct. A temporary restoration is sometimes used during interim steps. These treatments are designed to help the patient function better, improve hygiene and are proven to be safe and effective.

III. Background and Supporting Information

The following information is for reference purposes only in accordance with dental eligibility as defined by statute (law). Each subsection supports VA’s determinations for clinical necessity and alignment with generally accepted standards of dental practice.

1. Background Information
2. Single unit implant crowns and implant/abutment supported removable dentures (overdentures) are essential in modern restorative dentistry, offering superior functionality, aesthetics, and durability for replacing missing teeth or stabilizing prostheses. Single unit implant crowns are fabricated outside the mouth and attached to a dental implant, providing strength and stability to restore the appearance and function of a missing tooth, particularly when adjacent teeth are healthy. Overdentures, secured to implants, enhance the stability of full or partial dentures, improving patient comfort and chewing efficiency. These restorations preserve the natural tooth structure of adjacent teeth and play a crucial role in improving patient outcomes and quality of life by effectively managing tooth loss and prosthesis stability.

2. Research, Clinical Trials, and Evidence Summaries
3. The safety, effectiveness, and long-term success of single unit implant crowns and implant/abutment supported removable dentures (overdentures) are strongly supported by a robust body of clinical literature. Sailer et al. (2022) in Periodontology 2000 found that single implant crowns have high survival rates and improve function in cases of single tooth loss. Hartmann et al. (2020) in Journal of Oral Rehabilitation demonstrate the cost-effectiveness of overdentures with one or two implant attachments for rehabilitating edentulous mandibles. Meijer et al. (2018) in Clinical Oral Implants Research highlight the importance of appropriate crown-to-implant ratios for long-term success of implant crowns. Carr and Brown (2016) in McCracken’s Removable Partial Prosthodontics advocate for implants as strategic abutments to enhance removable partial denture (RPD) stability. The American Dental Association’s 2024 Evidence-Based Clinical Practice Guidelines provide a framework for risk assessment and prognosis, supporting these restorations. Collectively, these studies and guidelines provide a multifaceted evidence base, combining clinical expertise, systematic analyses, and primary research to justify these restorations for the specified indications.

3. U.S. Food & Drug Administration Information
4. VA generally only approves use of medical devices that have received at least Food & Drug Administration (FDA) clearance for 510(k) Premarket Notification. The FDA has determined these Class II devices are substantially equivalent (SE) to legally marketed predicate devices, in terms of safety and effectiveness, and may be marketed in the U.S. Manufacturers must adhere to FDA regulations on labeling, manufacturing practices, and post-market surveillance. The FDA monitors adverse event reports and can mandate recalls. Manufacturer’s Instructions for Use (MIFU) must be followed.

• Dental implants and restorative materials used in single unit implant crowns and overdentures must comply with FDA standards for safety, biocompatibility, and efficacy. Guidelines address the risk of adverse reactions and durability under functional loads.

• To search for devices that have received FDA 510(k) clearance or Premarket Approval (PMA), please visit the FDA Devices database.

4. American Dental Association Current Dental Terminology Coding Information
5. The following CDT codes listed in this section are provided for informational purposes only. Inclusion or exclusion of a code does not constitute or imply VA coverage or provider reimbursement. The list of codes may not be all-inclusive since the American Dental Association (ADA) code updates may occur more frequently than dental CDI updates. Please refer to section II.a. in this document to review indications and clinical criteria for clinical necessity.

CDT Code	Description
D6051	Placement of interim implant abutment
D6055	Connecting bar – Implant supported or Abutment Supported
D6056	Prefabricated abutment – includes modification and placement
D6057	Custom fabricated abutment – includes placement
D6058	Abutment supported porcelain/ceramic crown
D6059	Abutment supported porcelain fused to metal crown (high noble metal)
D6060	Abutment supported porcelain fused to metal crown (predominantly base metal)
D6061	Abutment supported porcelain fused to metal crown (noble metal)
D6062	Abutment supported cast metal crown (noble metal)
D6063	Abutment supported cast metal crown (predominantly base metal)
D6064	Abutment supported cast metal crown (noble metal)
D6065	Implant-supported porcelain/ceramic crown
D6066	Implant supported crown-porcelain fused to high noble alloys
D6067	Implant supported crown – high noble alloys
D6082	Implant supported crown – porcelain fused to predominately base alloys
D6083	Implant supported crown – porcelain fused to noble alloys
D6084	Implant supported crown – porcelain fused to titanium and titanium alloys
D6085	Interim implant crown
D6086	Implant supported crown-predominately base alloys
D6087	Implant supported crown-noble alloys
D6090	Repair of implant/abutment supported prosthesis
D6110	Implant/abutment supported removable denture of edentulous arch – maxillary
D6111	Implant/abutment supported removable denture for edentulous arch – mandibular
D6112	Implant/abutment supported removable denture for partially edentulous arch – maxillary
D6113	Implant/abutment supported removable denture for partially edentulous arch – mandibular
D6191	Semi-precision abutment – placement
D6192	Semi-precision attachment – placement
D6193	Replacement of an implant screw
D6197	Replacement of restorative material used to close an access opening of a screw-retained implant supported prosthesis, per implant
D6198	Remove interim implant component

Current Dental Terminology (CDT), Copyright ^© 2026 American Dental Association. All rights reserved.

IV. Definitions

Term	Definition
Abutment supported single unit crown	Crowns that are attached to an abutment, not directly to the implant post
Implant supported single unit crown	Crowns that are attached directly to the implant post
Implant/abutment supported removable denture (Overdenture)	A removable prosthesis secured to implants via clips, snaps, or locators, enhancing comfort and function, and removable by the patient for oral hygiene
Single unit implant crown	One implant crown restoration for any one quadrant

V. References

American Dental Association. (2024). CDT Codebook. ADA.

American Dental Association. (2024). Evidence-Based Treatment Planning: Assessment of Risk, Prognosis, and Expected Outcomes. ADA Guidelines.

Carr A, Brown D. (2016). McCracken’s Removable Partial Prosthodontics, 13th ed. Elsevier, Chapter 12, Considerations for the Use of Dental Implants with Removable Partial Dentures, 146–153.

Hartmann R, de Menezes Bandeira ACF, de Araújo SC, et al. (2020). Cost-effectiveness of three different concepts for the rehabilitation of edentulous mandibles: Overdentures with 1 or 2 implant attachments and hybrid prosthesis on four implants. Journal of Oral Rehabilitation, 47(11), 1394–1402.

Meijer HJA, Boven C, Delli K, et al. (2018). Is there an effect of crown-to-implant ratio on implant treatment outcomes? A systematic review. Clinical Oral Implants Research, 29 Suppl 18, 243–252.

Sailer I, Karasan D, et al. (2022). Prosthetic Failure in dental implant therapy. Periodontology 2000, 88(1), 130–144.

U.S. Food & Drug Administration. (2024, September 30). Dental ceramics – performance criteria for safety and performance-based pathway: Guidance for industry and Food and Drug Administration staff. FDA.

VI. Dental CDI History/Revision Information

Date	Summary of Updates
06/01/2026	New dental CDI created describing clinically necessary and not clinically necessary indications

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