Angulated screw channel solutions

Restorative flexibility and easy handling


Esthetics and access from a new angle

Angulated screw channel (ASC) solutions

Solve the esthetic challenges faced when screw-retained solutions are placed in the anterior and improve occlusal access in the posterior.

The angulated screw channel (ASC) provides the option to place the screw access hole anywhere between 0° to 25° in a 360° radius. This means you can now restore almost any situation with a screw-retained restoration and remove known risks associated with excess cement. 

What's more, the angulation allows the use of screw-retained restorations in the esthetic zone by avoiding a buccal screw access point, and the metal adapter means it's now possible to use zirconia implant restorations in the posterior.

The ASC function is available when restoring on Nobel Biocare conical connection implants.

Products with the ASC function:

  • NobelProcera ASC Abutment
  • NobelProcera Implant Crown
  • NobelProcera Implant Bridge1

► Learn more about our prosthetics

Why choose angulated screw channel solutions?

Easy handling

Omnigrip Screwdriver - for easy handling and restorative flexibility
The Omnigrip Screwdriver has a pick-up function and grip that has to be experienced to be believed. The unique design of the tip delivers a strong hold for full insertion torque, even at an angle. Now you can:
  • Work quickly and safely with the pick-up function and secure hold of the Omnigrip screwdriver.
  • Easily access cases in the posterior region. The angulation enabled by the Omnigrip tooling helps when vertical space is limited.
  • Reduce screw loosening by applying a torque of 35 Ncm at any angle.

Predictable retention and strength

NobelProcera ASC Abutment and Implant Crown
Get a predictable outcome and avoid the risks associated with residual cement.2 The adapter connecting the zirconia abutment to the implant is mechanically retained with the screw seated in the abutment.
The result? Highly predictable retention with no cement in sight.

Download clinical cases

Dr. Marwan Daas, Dr. Karim Dada and M. Jean Marc Etienne, France - anterior restoration

Situation: Ectodermal dysplasia cross-linked with multiple congenitally absent teeth leading to typical occlusal disorders. These agenesia are associated with severe alveolar bone atrophy.

Solution: Placement of six NobelReplace CC NP implants using NobelClinician software and guided surgery. Six NobelProcera ASC Abutments serve as screw-retained restorations.

View case (PDF, 391 kB)

Dr. Benjamin Cortasse, France – anterior restoration

Situation: Fractured maxillary right central incisor. Tooth is hopeless and extraction is planned. Insufficient periapical bone.

Solution: Bone and connective tissue grafts. NobelActive implant placement with provisional crown. Use of NobelProcera ASC Abutment for final restoration to avoid screw access hole being located labially.

View case (PDF, 423 kB)

Dr. Juan Zufia and Santiago Dalmau – anterior restoration

Situation: Agenesis of both lateral superior incisors. Maryland porcelain bridges with continuous decementations. 2-3 mm of bone width in both areas of the ridge. Not enough bone to place implants and sunken areas in the gingiva.

Solution: Removal of the Maryland Bridge. Connective tissue graft and guided bone regeneration performed. Placement of two NobelActive NP implants and two directly veneered NobelProcera ASC Abutments.

View case (PDF, 533 kB)

Anterior single-tooth replacement with Immediate Function

Case courtesy of Dr. Léon Pariente and Dr. Karim Dada, France

Situation: Root fracture of upper lateral incisor, tooth extraction indicated. 

Solution:  Immediate implant placement in extraction socket using a NobelParallel Conical Connection implant and NobelGuide pilot drilling template. Immediate provisionalization on the day of surgery and final restoration using the NobelProcera ASC Abutment. 

Prof. Dr. Stefan Holst, Germany, Luc and Patrick Rutten, Belgium – posterior restoration

Situation: Failing first mandibular molar. Restricted mouth opening.

Solution: Tooth extraction and placement of NobelReplace CC RP. Placement of NobelProcera ASC Abutment with angled screw access towards the mesial.

View case (PDF, 450 kB)

What users say

Dr. Simon Kold, Denmark

"For our practice [the ASC] has been the most important step forward in 2015... We like to call it a game-changer"

Watch the full video



Dr. Benjamin Cortasse, DDS, France

"These new solutions give both the restorative dentist and the dental technician more options. Greater flexibility helps ensure the best possible treatment outcome. Thanks to the free placement of the screw axis, the visual properties of the ceramics, such as translucency, can be optimized while preserving the advantages of a screw-retained solution.”


Patrick Rutten, Dental Technician, Belgium

“How many cases do we know where the screw access hole would come out at the incisal edge or even at the labial plane. Now, we can create a single screw-retained crown without cementing.”


Dr. Scott MacLean, DDS, FADI, FPFA, FACD, Canada

“We can get the screw channel in the ideal spot for both esthetics and strength, as well as for ideal placement of the final restoration. This is just fantastic."


1 These products may not be regulatory cleared/released for sale in all markets. Please contact the local Nobel Biocare sales office for current product assortment and availability.

2 Wilson TG, Jr. The positive relationship between excess cement and peri-implant disease: a prospective clinical endoscopic study. J Periodontol. 2009;80 (9): 1388-92.