Performance work statement for dental laboratory services (pws)



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VA255-16-Q-0168


PERFORMANCE WORK STATEMENT FOR DENTAL LABORATORY SERVICES (PWS)



1. General: The contractor shall provide proof of Certified Dental Laboratory (CDL) certification, state dental laboratory registration, FDA registration, or adherence to American Dental Association guidelines; including subcontractor’s credentials, if work is subcontracted. Contractor shall provide all labor, materials, general dental laboratory tools and equipment, and supervision necessary to fabricate complete dentures, partial dentures – fixed and removable – crowns, and dental implants using only alloys, metals, and components that meet FDA, ANSI, and American Dental Association standards, for the John Cochran Division and Jefferson Barracks Division of the St. Louis VA Health Care System.
2. Pick-up and Deliveries: The John Cochran and Jefferson Barracks Divisions of the St. Louis VA Medical Center will ship dental items to the contractor via UPS. The contractor will return dental items to the proper medical center division via UPS, using a Government-provided UPS account number.
Items made for a particular patient shall be marked with the patient’s last name and last four digits of his or her social security number.


  1. Dental Services:

    1. Material standards:

      1. Complete Dentures/Removable Partial Dentures (See paragraph 1. General, for description of equivalent.)

        1. Lucitone 199 acrylic resin or equivalent

        2. Coelor coloration or equivalent

        3. Occlusal Scheme

          1. Monoplane, linear

          2. Anatomic, full balanced

          3. Lingualized, linear

            1. 33 */monoplane

            2. 30 */rational

            3. Functional/rational

      2. Tooth material

        1. TrybyteTM IPN (Dentsply) or equivalent

        2. Ivoclar Blueline

        3. Heraus Kulzer

        4. Vitapan

    2. Fixed Partial Denture/Crown (See paragraph 1. General, for description of equivalent.)

      1. High Noble*

        1. Full cast white-Argenco 40 or equivalent

        2. Full cast yellow-Argenco 5641’ or equivalent

        3. Porcelain to yellow-Argedent 473 or equivalent

        4. Porcelain to white Argendent 40 or equivalent

    3. Implant Systems

      1. As ordered, but not limited to:

        1. Noble Biocare

        2. Straumann Astra

        3. 3i

  2. Fabrication standards:

    1. Complete Dentures

      1. Master Casts

        1. Base is 10mm thick at the thinnest portion of the cast

        2. 3mm wide land area throughout the circumference of the cast

        3. Sulcular depth 3mm on buccal, to follow the contour of the buccal vestibule

        4. Sulcular depth 3mm on lingual to follow the contour of the vestibule

        5. Free of bubbles and defects

        6. All anatomic areas of impression included on cast

        7. Tongue area, flat across the arch

        8. Base is parallel to the plane of occlusion or residual ridge

      2. Impression Trays

        1. Rigid and fabricated from the appropriate material

        2. Covers all indicated anatomy

        3. Handles do not interfere with border molding movements, formed as prescribed, so as not to displace facial musculature

        4. Impression material retentive features included in the tray as prescribed

      3. Record Base

        1. Is well adapted to the residual ridge

        2. Covers all indicated anatomy

        3. Is extended to the land area

        4. Is adequately thick for rigidity

        5. Is smooth and free of sharp area

      4. Occlusion Rim, Maxillary

        1. Is fabricated from the prescribed baseplate wax

        2. Is 10mm wide in the posterior section

        3. The posterior sections are placed over the crest of the residual ridges

        4. Is straight from the buccal aspect of the record base border to the buccal aspect of the occlusion rim

        5. Taper in width to 3mm in the anterior section

        6. Anterior section angles 5 degrees anteriorly from the horizontal

        7. Anterior 22mm long from the extent of the labial flange

        8. Posterior is 18mm long from the extent of the buccal flange

        9. All wax is smooth, without voids

        10. Adheres well to the record base

        11. The occlusal plane is flat, generally parallel to the residual ridge

      5. Occlusion Rim, Mandibular

        1. Is fabricated from the prescribed baseplate wax

        2. Is 10mm wide in the posterior section

        3. The posterior sections are placed over the crest of the residual ridges

        4. The posterior sections stop at the beginning of the upward incline of the residual ridges

        5. Is straight from the buccal aspect of the record base border to the buccal aspect of the occlusion rim

        6. Tapers in width to 3mm in the anterior section

        7. Anterior section angles 5 degrees anteriorly from the horizontal

        8. Anterior is 18mm long from the extent of the labial flange

        9. Posterior extends to the top of the retro-molar pad

        10. All wax is smooth, without voids

        11. Adheres well to the record base

        12. The occlusal plane is flat, ideally parallel to residual ridge

      6. Wax Trial Dentures, Maxillary

        1. The midline of the arranged teeth matches the marked midline of the occlusion rims

        2. The incisal edges of the anterior teeth are placed in the same plane as the incisal surface of the occlusion rim

        3. The occlusal scheme by default is to a Class I occlusion with a balanced set-up, unless otherwise specified

        4. The inter-dental wax fills the embrasures up to the contact points

        5. Adequate inter-dental wax fills the embrasures to allow for finishing of the acrylic resin

        6. A 4mm band of simulated attached gingiva is present, elevated to simulate buccal bone

        7. The palatal area is 2mm thick

        8. A 1mm band of wax is palatal to the posterior teeth to allow for finishing of the acrylic resin

        9. Wax does not overlap onto the beginning/palatal of the ridge-lap area of the anterior teeth

        10. The opposing occlusion contacts into proper interdigitating at the established vertical dimension of occlusion

      7. Wax Trial Dentures, Mandibular

        1. The midline of the arranged teeth matches the marked midline of the occlusion rims

        2. The facial surfaces of the anterior teeth are placed in the same plane as the contoured facial surface of the occlusion rims

        3. The incisal edges of the anterior teeth are placed to develop the horizontal and vertical overlap necessary for the individual clinical requirements

        4. The occlusal plane of the mandibular posterior teeth is at the appropriately indicated superior aspect of the pear shaped pad

        5. The central groove line of the mandibular posterior teeth is placed over the crest of the residual ridge

        6. The number and size of posterior teeth are in harmony with space available from the distal of canine to the beginning of the ascending ramus

        7. The inter-dental wax fills the embrasures up to the contact points

        8. Adequate inter-dental wax fills the embrasures to allow for finishing of the acrylic resin

        9. A 4mm band of simulated attached gingiva is present, elevated to simulate buccal bone

        10. A 1mm band of wax is lingual to the posterior teeth to allow for finishing of the acrylic resin

        11. Wax does not overlap onto the beginning/lingual of the ridge-lap of the anterior teeth

        12. The buccal shelf area is concave, of adequate thickness

      8. Processed and Polished Prosthesis

        1. The acrylic resin free of pits, fissures, and porosity

        2. The acrylic resin is polished on all non-tissue bearing areas

        3. The denture borders are anatomically complete

        4. No evidence of flash remains on the denture borders

        5. The denture bases remain adequately thick for rigidity

      9. Remount Casts (if required)

        1. The denture borders are well supported around the buccal periphery

        2. Base is 10mm thick at the thinnest portion of the cast

        3. 4rnm wide land area throughout the circumference of the cast

    2. Removable Partial Dentures

      1. Custom Impression Trays

        1. Rigid and fabricated from the appropriate material

        2. Covers all indicated anatomy

        3. Handles do not interfere with border molding movements, formed as prescribed

        4. Impression material retentive features included in the tray as prescribed



      1. Rests

        1. Follow the dimensions and location of the design

        2. Fill the prepared rest seats completely

        3. Are minimally 1.5mm thick

        4. Are no greater in contour than the original marginal ridge/buccal cusp ridge/fossae area

      2. Minor Connector

        1. Follow the dimensions and location of the design

        2. Are broad and fan shaped at the junction with the major connecter

        3. Are minimally 1.5mm thick

        4. Crosses the gingival margin at 90 degrees

      3. Proximal Plates

        1. Follow the dimensions and location of the design

        2. Are thinned and tapered only at the marginal ridge areas, when no rest is present

      4. Major Connectors

        1. Follow the dimensions and location of the design

        2. Have definitive external finish lines

        3. Have definitive internal finish lines

      5. Denture Base Retention

        1. Follow the dimensions and location of the design

        2. Show a broad connection to the major connector

        3. Are not extended more than 2mm buccal to the crest of the residual ridge; contains a tissue-stop that contacts the residual ridge of the master cast

      6. Retainers, Indirect

        1. Follow the dimensions and location of the design

        2. Are broad and fan shaped at the junction with the major connector

        3. Are minimally 1.5mm thick

        4. Crosses the gingival margin at 90 degrees

      7. Retainers, Direct

        1. Follow the dimensions and location of the design

        2. Are uniformly tapered to the retentive tip

        3. Are minimally 1.5mm wide

      8. Wax Trial Removable Partial Dentures, Maxillary

        1. The midline of the arranged teeth matches the marked midline of the occlusion rim

        2. The facial surfaces of the anterior teeth are placed in the same plane as the contoured facial surface of the occlusion rims

        3. The incisal edges of the anterior teeth are placed in the same plane as the incisal surface of the occlusion rim

        4. The inter-dental wax fills the embrasures up to the contact points

        5. Adequate inter-dental wax fills the embrasures to allow for finishing of the acrylic

        6. A 4mm band of simulated attached gingiva is present to simulate buccal bone

        7. A 1mm band of wax is palatal to the posterior teeth to allow for finishing of the acrylic resin

        8. Wax does not overlap onto the beginning/palatal of the ridge-lap area of the anterior teeth

        9. The opposing occlusion contacts into proper interdigitation at the established vertical dimension of occlusion

      9. Wax Trial Removable Partial Dentures

        1. The midline of the teeth matches the marked midline of the occlusion rims

        2. The facial surfaces of the teeth are placed in the same plane as the contoured facial surfaces of the occlusion rims

        3. The incisal edges of the anterior teeth are placed in the same plane as the incisal surface of the occlusion rim

        4. The occlusal plane of the mandibular posterior teeth is at the appropriately indicated superior aspect of the pear shaped pad

        5. The central groove line of the mandibular posterior teeth is placed over the crest of the residual ridge

        6. The number and size of posterior teeth is in harmony with space available from the distal of the canine to the beginning of the ascending ramus

        7. The inter-dental wax fills the embrasures up to the contact points

        8. Adequate inter-dental wax fills the embrasures to allow for finishing of the acrylic resin

        9. A 4mm band of simulated attached gingiva is present, elevated to simulate buccal bone

        10. A 1mm band of wax is lingual to the posterior teeth to allow for finishing of the acrylic resin

        11. Wax does not overlap onto the beginning of the ridge-lap area of the anterior teeth

        12. The buccal shelf area is concave, of adequate thickness

      10. Processed and Polished Prosthesis

        1. The acrylic resin is free of pits, fissures, and porosity

        2. A smooth junction exists between the acrylic resin and external finish lines

        3. The acrylic resin is polished an all non-tissue bearing areas

        4. The denture borders are anatomically complete

        5. No evidence of flash remains on the denture borders

        6. The denture bases remain adequately thick for rigidity

    1. Fixed Partial Dentures (FPD)/Crown

      1. Custom Trays

        1. Indicated relief has been well adapted

        2. Is well adapted to the teeth and residual ridge covers all indicated anatomy

        3. Completely fills the vestibule Is extended to the beginning of the land area when indicated

        4. Is adequate for rigidity

        5. Is smooth and free of sharp areas

      2. Working Casts/Dies

        1. All necessary anatomic landmarks are included

        2. Dies are stable, retentive, and do not rotate

        3. No bubbles or defects present in the cast

        4. Dies are properly trimmed, retaining as much root structure as possible

        5. Die spacer is applied to prepared surfaces leaving 1 mm free at margin

        6. All dies are numbered



      1. Cut-Back Design for Veneer Application

        1. Coping/wax crown cut-back design allows for a uniform 2mm thickness of veneer

        2. Proximal cut-back design allows for marginal ridge veneer support

        3. Rigid connector size is maximized, within the constraints, for periodontal health and esthetics

        4. A uniform transition exists between metal and veneer material

      2. Veneer Application

        1. Axial contours are within normal limits for the particular tooth and/or arch form

        2. Applied veneer shade matches the requested shade per shade guide submitted or universal (Vita, Trubyte, Ivoclar, etc.) system

      3. Finish/Polish of FPD/Crown

        1. Axial contours are within normal limits for the particular tooth and/or arch form

        2. A uniform transition exists between metal and veneer material

        3. No unsupported veneer material remains on the allow substructure

        4. All margins are closed on the die

        5. The established vertical dimension of occlusion is maintained when the FPD/crown is articulated

        6. The veneer material is appropriately finished (glazed, polished, etc.)

        7. The substructure metal is highly polished

      4. Surveyed Crowns for Removable Partial Denture Abutments

        1. All aspects of FPD/crown fabrication are employed

        2. Posterior occlusal rests:

          1. are ½ the width of the buccal-lingual cusp tip width

          2. are spoon-shaped, deepest toward the center of the tooth

          3. form an acute angle with the guide at the most axial point

          4. re-establish original marginal ridge contours

          5. maintain occlusal contours

        3. Cingulum rests:

          1. are placed in the gingival 1/3 of the crown to avoid occlusal interferences

          2. provide a positive stop for the removable partial denture



        1. Guide planes:

          1. include a 1mm wide band of surface parallel to the established path of withdrawal from the facial line-angle to the lingual/palatal line-angle

          2. relief provided at the gingival 1/3 of the axial surface

        2. Survey lines, circumferential direct retainers:

          1. begin in the gingival one-third of the abutment adjacent to the rest

          2. end in the occlusal 1/3 of the abutment to establish the desired undercut

          3. allow for the terminal one-third of the retainer to be placed into the undercut

        3. Survey lines, bar direct retainers:

          1. a “U” shaped survey line established the desired undercut

    1. Implant Supported Crowns and fixed partial dentures

      1. Laboratory able to provide at cost any necessary components, including:

        1. Lab analogs

        2. Lab screws

        3. Temporary or permanent abutments

        4. UCLA style abutments

      2. Laboratory to follow Rx indicating cemented or screw retained prosthesis fabrication

        1. Screw retained prosthesis will have a metal chimney screw hole

        2. Cemented prosthesis to follow Rx for either milled custom abutment fabrication or utilization of standard abutment, as indicated

      3. Occlusal contacts for implant supported prosthesis will be “light” by default, unless Rx indicates otherwise

3. Miscellaneous Services at St. Louis VAMC: The contractor will have available at both divisions of the St. Louis VAMC authorization forms for the authorization of work to be done by the contractor.

4. Disinfection: Disinfect all contaminated items, such as impressions, casts and other prosthetic appliances using effective infection control measures; in compliance with all relevant federal, state, and local regulations that affect dental laboratories and dental laboratory employees; to prevent infection and cross-contamination.

5. Special Orders: Dental laboratory orders - special orders - not covered by the contract cannot exceed $3,500 without a written contract modification. The Contracting Officer’s Representative (COR) is authorized to place special orders up to $3,500. For special orders above $3,500, the Contracting Officer will provide a written contract modification.

6. Dental Laboratory Visits and on-site training: The contractor shall permit VAMC dental staff and residents to visit the laboratory, to observe all processes and techniques. The contractor will allow VAMC dental staff and residents to attend training classes conducted at the contractor’s laboratory, if possible. Attendance will be at no cost to the contractor.

7. Inspection of contractor’s facility and proof of certification: The contracting officer (CO) reserves the right to inspect - or assign a representative to inspect - the contractor’s (or subcontractor’s) facility. The contractor shall produce copies of the laboratory’s certifications and licenses to the contracting officer upon request.

8. Delivery Schedule: The contractor will ship dental items back to the proper divisions via UPS, using a Government-provided UPS account.

The contractor will keep to the following delivery schedule (Delivery Time is expressed in work days):



9. Open lines of communication. Communication between the contractor and the VAMC divisions is crucial to the accuracy, quality, and on time delivery of the dental items. Therefore, the contractor shall provide the VAMCs with telephone numbers and names of contact persons.

10. Substandard items. The contracting officer’s representative (COR) will submit a Contract Discrepancy Report (CDR) to the contracting officer (who will then send a copy to the contractor), documenting the discrepancy. The contractor shall state the corrective action to be taken, and make good any discrepancy caused by negligence at his or her own expense.

11. Subcontract dental laboratory: The contracting officer must authorize the subcontracting of any dental work. In the event the contracting officer authorized subcontracting and the contractor desires to switch subcontractor or change the work being subcontracted, the contractor must first notify the contracting officer and receive written authorization from the contracting officer before implementing the proposed change. The contractor agrees to pay for any cost increase resulting from the proposed change.

12. Quality control: The contractor shall provide a copy of his or her Quality Control Program upon request. The Program should include the procedures followed by the laboratory personnel in fabricating dental prostheses. The contracting officer’s representative (COR) will use the St. Louis VAMC’s Standards of Acceptable Deliverables (SAD) to evaluate the laboratory’s materials, procedures, and finished items. (See table in QASP, pages 5-7)

13. Monthly Invoices: Monthly invoices shall be submitted electronically, and should include: 1) an itemized listing of all appropriate charges, 2) the designated contract number, 3) obligation number, and 4) vendor tax ID number.

14. Contract Administration Data

The Department of Veterans Affairs will retain all contract administration functions. The contracting officer is the only person authorized to change or modify the contract. The contractor shall communicate directly with the contracting officer on all matters pertaining to contract administration. Only the contracting officer is authorized to make changes to the contract that affect price, quality, quantity, delivery, or other terms and conditions of the contract. (FAR 1.602)



15. Contracting Officer’s Representative: Pursuant to VAAR Provision 852.270-1, Representatives of Contracting Officer, the designated representative for this contract is Dr. Scott A. Trapp.

16. Personnel

This is a non-personal services contract. Personnel rendering services under this contract are not subject either by the contract’s terms or by the manner of its administration, to the supervision and control usually prevailing in relationships between the government and its employees. The Government shall not exercise any supervision or control over the contract service providers performing services herein. Such contract service providers shall be accountable solely to the contractor who, in turn, is responsible to the Government.



17. Hours of Operation

Business hours for the St. Louis VAMC divisions follow:

a. Administrative hours: Monday through Friday, 7:30 a.m. - 4:00 p.m.

b. National Holidays: The 10 holidays observed by the Federal Government are:

New Year’s Day;

Martin Luther King’s Birthday;

Presidents Day;

Memorial Day;

Independence Day;

Labor Day;

Columbus Day;

Veterans Day;

Thanksgiving;

Christmas; and



any other day specifically declared by the President of the United States to be a national holiday.




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