Implant-Supported Dentures — Digital Fabrication & Delivery

Core Product Features

Product Advantages

✅ Attachment versatility — We fabricate Locator systems (tolerates up to 40° divergence), ball/O-ring matrices, and CAD-designed custom bar frameworks milled from cobalt-chromium or titanium. If you prefer a third-party prefabricated bar (Ackermann, Dolder, Hader), ship it to us and we'll process the overdenture to fit.

✅ Material traceability — Every denture base is fabricated from batch-tracked PMMA or injection-molded acrylic. For heat-processed cases, we use Lucitone 199 (Dentsply Sirona import) or certified domestic PMMA. Batch numbers, brand labels, and country of origin certificates can be supplied per case on request.

✅ Tooth customization — We stock multiple composite resin tooth brands (Vita, Ivoclar mold libraries) and match your specified shade (Vita Classical A–D, Bleach shades). Custom characterization (gingival staining, incisal translucency) is supported.

✅ ISO 13485 / CE / FDA compliance — Our manufacturing facilities hold ISO 13485:2016 certification. We maintain FDA establishment registration (custom dental devices) and CE marking under EU MDR Annex XIII (custom-made devices). Important note: Implant-supported dentures (patient-removable prostheses) are custom devices, not FDA-approved products. The FDA does not approve custom dental prostheses; it registers manufacturers and device listings.

1. Fabrication Workflow

Our production process integrates digital precision with manual artistry to deliver patient-removable implant overdentures that meet functional and esthetic expectations.

Step 1: Case intake and prescription review Digital files (STL/PLY) or physical impressions arrive at our Shenzhen facility. A case coordinator reviews the prescription for completeness: implant system brand/platform, attachment type (Locator/ball/bar), implant analog positions, opposing arch relation, tooth shade/mold, and any special instructions. Missing information triggers immediate email/phone contact to the submitting practice.

Step 2: Digital design (for digital cases) Implant analog scans are imported into Exocad Dental CAD or 3Shape Dental System. A senior CAD technician designs the denture base, positions the attachment housings (ensuring passive fit to implant analogs), and arranges denture teeth according to occlusal plane and esthetic guidelines. The digital design is reviewed by a second technician before milling.

Step 3: Physical wax-up (for impression cases) Master casts are articulator-mounted using the submitted bite registration. Wax rims establish vertical dimension and midline. Denture teeth are set in wax, then tried in (if a try-in appointment is requested) or approved for processing.

Step 4: Base fabrication

Step 5: Attachment integration Locator housings, ball matrices, or custom bar clips are embedded or bonded into the denture base. Retention is test-fitted on lab analogs and measured (typical: 2–4 lbs retention force for Locator blue males, 3–6 lbs for pink males).

Step 6: Hand finishing Technicians polish the denture base (remove flash, smooth tissue surface), verify tooth bonding, and add characterization (gingival staining, anatomical contours) if requested.

Step 7: Quality control (see § Quality Control Process below) Every case passes through fit verification, occlusal assessment, esthetic review, and material integrity inspection before packaging.

Step 8: Packaging and shipment Cases are packed with:

• Completed patient-removable implant-supported denture
• Istar quality certificate
• Case-specific documentation (prescription copy, material batch information if requested)
• Spare retention inserts (for Locator cases: 1 set blue/pink/clear processing males)

Shipment via UPS Saver or DHL Express 12:00 (3–5 day delivery to US/Europe).

2. Digital Case Submission

Send digital files to [email protected] via WeTransfer, Dropbox, or 3Shape Communicate. We accept:

• Scan formats: STL, PLY, 3Shape (.dcm), Exocad, CEREC, iTero, Medit
• Required files: Implant analog scan or scan-body library file, opposing arch scan, bite registration scan or jaw-relation record
• Prescription: Attachment type, implant system brand/platform, tooth shade/mold, special instructions (attach as PDF or include in email body)

Our digital workflow: Import → Exocad/3Shape design (denture base + tooth setup) → senior technician review (occlusion + esthetics) → 5-axis CNC milling (PMMA base) or DLP 3D printing (try-in base) → hand finishing + QC → packaging with case documentation.

3. Physical Impression Cases

For practices sending traditional impressions:

1. Download our RX form (PDF) or use your own. Indicate: implant system brand/platform, attachment type (ball/Locator/bar), denture teeth shade/mold, rush service if needed.
2. Pack securely: Wrap master cast and bite registration in bubble wrap or foam. Damaged models = remakes. Packing guide images here.
3. Ship via UPS Saver or DHL Express 12:00 to reach our Shenzhen facility within 3 days. For urgent cases (1–2 day production), mark "URGENT" on the box and prescription, then email [email protected] to pre-schedule.

Shipping address: Istar Dental Lab Shenzhen Pingshan District, Kengzi Street, Zhongcheng Life Science Park Phase 1 Shenzhen, Guangdong, China

4. Quality Control Process

Every patient-removable implant-supported denture passes through:

1. Fit verification — Abutment connection test-seated on lab analogs; retention force measured for Locator/ball matrices.
2. Occlusal assessment — Articulator-mounted check for balanced contacts; adjusted if centric or excursive interferences detected.
3. Esthetic review — Shade match (visual + digital), tooth positioning symmetry, gingival contour naturalness.
4. Material integrity — Inspect for voids in acrylic, debonded teeth, sharp edges.

QC team: 25 dedicated inspectors review every case before shipment. If any checkpoint fails, the case is flagged for correction.

Remake policy: If the delivered prosthesis doesn't meet your expectations due to our fabrication error, we remake it at no additional cost. See our Refund and Returns Policy for details.

Turnaround Time & Delivery

Tracking: You'll receive a shipping notification with tracking number once the case departs. Our 40-person customer service team provides one-on-one support throughout—ask for progress updates via email, WhatsApp (+86 17825610713), or phone (+86 18575368050).

Indications and Contraindications

Clinical Indications

Implant-supported dentures (patient-removable overdentures retained by dental implants) are indicated for:

1. Complete edentulism — Patients missing all teeth in one or both arches who require improved retention and stability compared to conventional complete dentures.
2. Adequate bone volume — Sufficient alveolar ridge height and width to support implant placement (minimum 10 mm length × 3.5 mm diameter for standard fixtures; shorter/narrow-diameter implants may be considered with case-specific planning).
3. Osseointegration capacity — Patients with healthy systemic conditions that permit normal bone healing (typically 3–6 months post-implant placement before prosthetic loading).
4. Patient preference for removability — Patients who request or require a removable prosthesis for hygiene access, psychological comfort, or budget considerations, rather than fixed implant-supported restorations.
5. Inadequate anatomy for fixed prostheses — Cases where severe bone resorption, unfavorable implant angulation, or anatomical constraints (maxillary sinus, inferior alveolar nerve proximity) make fixed full-arch restorations impractical or cost-prohibitive.
6. Existing denture wearers seeking upgrade — Patients transitioning from conventional complete dentures who wish to retain the familiar removable format while gaining implant retention.

Contraindications

Absolute contraindications (implant placement itself):

• Active malignancy in the jaw region
• Uncontrolled metabolic disease (severe uncontrolled diabetes, osteomalacia)
• Recent head/neck irradiation (within 12 months; risk of osteoradionecrosis)
• Intravenous bisphosphonate use (high risk of medication-related osteonecrosis of the jaw)

Relative contraindications (case-specific assessment required):

• Heavy bruxism or parafunctional habits — May accelerate attachment wear (Locator inserts, O-ring matrices) or bar screw loosening. Consider nightguard or more robust attachment systems.
• Poor oral hygiene or noncompliance — Implant-supported dentures require daily removal for cleaning and periodic professional maintenance. Patients unable or unwilling to maintain hygiene are at higher risk for peri-implantitis.
• Severe ridge resorption — If bone volume is insufficient for standard implant placement, bone grafting or alternative implant strategies (zygomatic implants, short/narrow-diameter fixtures) may be required before overdenture fabrication.
• Unrealistic esthetic expectations — Patients expecting a fixed-prosthesis appearance from a removable overdenture may be dissatisfied. Full disclosure of prosthesis design (visible acrylic flanges, tissue adaptation) is essential during case planning.

Fabrication-side contraindications (lab limitations):

• Third-party bar systems without documentation — If you send a prefabricated bar (Ackermann, Dolder, Hader) without technical specifications or fitting guide, we cannot confirm passive fit. Always include manufacturer documentation or contact us before shipping.
• Non-standard implant analogs — For digital cases, we require compatible scan bodies or analog library files. If your implant system is not in our database (3Shape/Exocad libraries), provide STL files of the analog geometry.

Patient Selection Notes

Mandibular overdentures (two-implant) are the most predictable and cost-effective entry point for patients new to implant prosthetics. Success rates exceed 95% at 5 years when basic inclusion criteria (adequate bone, osseointegration, patient hygiene) are met.

Maxillary overdentures require more careful patient selection due to softer bone quality and larger prosthesis mass. Four to six splinted implants with custom bar frameworks are recommended; two unsplinted anterior implants carry higher risk of prosthetic failure and are generally not advised.

Clinical Reference: Implant Number & Attachment Selection

This section summarizes evidence-based guidance to support your case planning. For detailed case-specific recommendations, contact our technical team.

Mandibular Overdentures

Two interforaminal implants is the evidence-backed minimum for mandibular overdentures. A 2009 systematic review and 2002 RCT established that mandibular overdentures retained by two implants significantly outperform conventional complete dentures in patient satisfaction, chewing ability, and quality of life. A 2025 meta-analysis found no clinically meaningful difference in implant survival between single-implant and two-implant designs, though two remain the consensus recommendation for improved stability.

Attachment performance (2020 systematic review):

Maxillary Overdentures

The upper jaw is more technique-sensitive: softer bone, pneumatized sinuses, larger surface area. The same meta-analysis reports annualized implant survival of 98.1% for six or more splinted implants versus 97.0% for four or fewer, while overdenture survival ran 99.5% versus 96.9%. A separate systematic review found no significant difference between four and six splinted maxillary implants when using favorable distribution and rigid splinting. Two unsplinted anterior implants are generally not considered predictable for maxillary overdentures due to poorer bone quality and posterior cantilever effects.

Our recommendation: Four to six implants with a custom bar framework. Contact us to discuss implant positions and bar design for your specific case.

Why Practices Choose Istar for Implant Overdentures

✅ Full in-house production — CAD design, CNC milling, attachment assembly, and quality inspection completed in our owned Shenzhen and Huizhou facilities. No third-party outsourcing.

✅ Digital-first workflow — We accept STL, PLY, 3Shape, Exocad, CEREC, and iTero scans. Denture bases are designed in Exocad/3Shape Dental System and output via 5-axis CNC (PMMA) or DLP 3D printing (trial bases).

✅ Proven capacity and speed — 55 dedicated denture technicians (part of our 460-person team) produce 4,000–6,500 removable cases per month. Standard turnaround: 7–10 business days including international shipping (UPS Saver / DHL Express).

✅ International service experience — We've partnered with 50+ dental labs, 100+ clinics, and 400+ dentists across the United States, Netherlands, Germany, France, Belgium, Austria, United Kingdom, Luxembourg, and Switzerland since 2012.

How to Start Your Case

Step 1: Gather Your Materials

• Finalized impressions or digital scans
• Implant positions confirmed (radiograph or CBCT if needed for bar design)
• Prescription form with attachment preferences

Step 2: Contact Us

• Email: [email protected] (attach scans or send WeTransfer link)
• Phone: +86 18575368050 (Monday–Friday, 9 AM–6 PM China Standard Time, UTC+8)
• WhatsApp: +86 17825610713 (fastest for quick questions or image sharing)

Step 3: Confirm Timeline

Our team acknowledges receipt within 2 business hours and provides a delivery estimate. Rush cases require advance coordination—email us before shipping.

Frequently Asked Questions

1. Do you fabricate the metal bar, or do I need to source it separately?

We fabricate custom bars in-house—CAD-designed, CNC-milled from cobalt-chromium or titanium. Send us the implant analog positions (physical model or digital scan), and we'll deliver the bar framework with the finished denture. If you prefer a third-party bar (e.g., Ackermann, Dolder), ship it to us and we'll process the overdenture to fit.

2. What file formats do you accept for digital cases?

STL, PLY, and proprietary formats from 3Shape, Exocad, CEREC, iTero, and Medit. If using a different scanner, export as STL and include implant analog library files or scan-body reference.

3. How often do Locator nylon inserts need replacement?

Typically every one to two years, depending on patient bite force, bruxism habits, and frequency of denture removal. We recommend stocking replacement inserts (blue/pink/clear processing males) and scheduling a 6-month recall to assess retention. A 2018 study documented ~20% retention loss after 5,000 insertion cycles. Proper insert maintenance is essential for long-term success of implant-retained dentures.

4. Can I specify denture tooth brand and shade?

Yes. We stock multiple composite resin teeth brands and can match your preferred mold library (e.g., Vita, Ivoclar). Indicate tooth shade (Vita Classical A–D or Bleach shades), mold number, and any characterization requests (incisal translucency, surface texture) on the prescription form.

5. What is your remake policy?

If the misfit is due to our fabrication error, we remake it at no charge. If it's due to changes in the patient's implant positions or soft tissue since the impression, we'll work with you to identify the issue—adjustments or a new impression may be needed. Communicate any concerns within 30 days of delivery. Our goal is a passive fit and satisfied patient.

6. Do you offer volume discounts?

Yes. Practices and labs sending 10+ cases per month qualify for volume pricing. Contact our business development team at [email protected] to discuss custom arrangements.

7. What CDT codes apply to implant-supported removable dentures?

⚠️ Important: CDT codes change periodically and payer policies vary. Always verify with the current ADA CDT manual and the patient's plan before submitting claims. Common codes as of October 2026:

Implant-supported removable dentures (patient-removable overdentures):

• D6110: Implant/abutment-supported removable denture, edentulous maxillary arch
• D6111: Implant/abutment-supported removable denture, edentulous mandibular arch
• D6112: Implant/abutment-supported removable denture, partially edentulous maxillary arch
• D6113: Implant/abutment-supported removable denture, partially edentulous mandibular arch

Related component codes:

• D6055: Connecting bar (implant- or abutment-supported)
• D6056: Prefabricated abutment (including modification and placement)
• D6057: Custom abutment (including placement)
• D6091: Replacement of replaceable part of semi-precision or precision attachment (per attachment)
• D6090: Repair of implant/abutment-supported prosthesis (by report)

Critical distinctions: D6114/D6115 are for fixed (not patient-removable) implant-supported dentures; do not use these for removable overdentures. CDT codes describe procedures; they do not determine coverage or reimbursement (payer policies govern those decisions).

8. Do you follow FDA regulations and ISO standards?

Regulatory documentation is specific to each destination market. Istar holds FDA establishment registration for its Chinese facilities, operates under an ISO 13485-based quality management system, and manufactures custom-made devices under EU MDR Annex XIII with CE marking for applicable product lines.

Important distinction: overdentures are custom devices, not FDA-approved products. The FDA does not approve custom dental prosthetics; it regulates facilities, materials, and manufacturing processes. Our documentation supports your own compliance and reimbursement requirements, but payer coverage is always determined by the patient's plan.

9. Do you offer white-label or private-label services?

Not currently—our cases are delivered with Istar documentation and quality certificates. For high-volume partnerships requiring rebranding, contact our business development team at [email protected] to discuss custom arrangements.

10. What is the difference between "implant-supported" and "implant-retained" dentures?

In everyday clinical use, the terms are often synonymous—both implant-supported dentures and implant-retained dentures refer to a patient-removable denture anchored by implant attachments. Some sources distinguish "supported" (implants bear the load) from "assisted" (implants provide retention, ridge bears occlusal load), but definitions vary by region. To avoid confusion, specify the attachment type and implant count when submitting a case, rather than relying on a single label.

About Istar Dental Lab

Since 2012, Istar has served 400+ dentists, 100+ clinics, and 50+ dental labs across the United States and Europe. With two owned facilities in Shenzhen and Huizhou and a team of ~460 in-house technicians, we maintain full control over every step—from digital design to final polish.

Monthly capacity (standard season):

• Removable dentures: ~4,000 cases/month
• Peak season: ~6,500 cases/month

We welcome factory tours (Shenzhen or Huizhou) and virtual audits—contact us to schedule.

Our commitment: No third-party outsourcing. Every patient-removable implant-supported denture is designed, milled, finished, and inspected by our team under one roof. When you partner with Istar, you work directly with the people making your cases.

Ready to Get Started?

Whether it's your first implant overdenture case or your hundredth, our team is here to support you from impression to insertion.

Contact Istar Dental Lab:

• Email: [email protected]
• Phone: +86 18575368050
• WhatsApp (case coordination): +86 17825610713

Response time: We reply to inquiries within 2 business hours (Monday–Friday, 9 AM–6 PM UTC+8).