Comparison of Clinical Performance and Safety of Zirconia vs. Titanium Implants: a Multi-national RCT.

Dental Implants, Single-Tooth Clinical Trial

Official title:

Comparative Performance of Zirconia Tissue Level Implants vs. Titanium Bone Level Implants Placed With a Fully Digital Workflow: A Multicentre Multinational Randomized Controlled Clinical Trial

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT03908177
• Other study ID #: CR2017-04
• Status: Active, not recruiting
• Phase: N/A
• Start date: September 7, 2019
• Est. completion date: June 30, 2025

Study information

• Verified date: March 2024
• Source: Institut Straumann AG
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

A post-market, multi-centre, prospective, open, randomized-controlled, non-inferiority clinical study to compare short-term performance and safety of the Straumann PURE 2-piece Ceramic Implant with Straumann Bone Level Implant using a fully digital workflow.

Description:

To compare short-term performance and safety of the Straumann PURE 2-piece Ceramic Implant with Straumann Bone Level Implant using a fully digital workflow. Post-market, multi-centre, prospective, open, randomized-controlled, non-inferiority clinical study investigating patients in need of dental implant therapy for single-tooth gap rehabilitation. The follow up time is1 year after final crown restoration.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 124
• Est. completion date: June 30, 2025
• Est. primary completion date: December 31, 2024
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Patients must have voluntarily signed the Informed Consent Form before any study related procedures are performed, are willing and able to attend scheduled follow-up visits and agree that the pseudonymized data will be collected, analysed, and published.

• Patients must be males or females who are a minimum of 18 years of age.

• Patients, who are in need of a single tooth replacement with a dental implant in the premolar-to-premolar area in the mandible or maxilla (excluding lower incisors).

• Presence of natural teeth on both sides of the study implant position and opposing dentition (single tooth gap).

• Patients with healed extraction sockets, which means that at implant surgery:

• Soft tissue coverage of the socket is complete; and

• Alveolar bone is reconsolidated (around 16 weeks after tooth extraction).

Exclusion Criteria:

• Patients with inadequate bone volume where major bone augmentation would be required at implant location.

• Inadequate anatomic situation that would prevent prosthetic-driven planning based on CBCT.

• Presence of implants neighbouring the study implant.

• Patients with inadequate oral hygiene (FMPS = 20%).

• Patients with local root remnants.

• Patients with inadequate wound healing capacity.

• Patients with incomplete maxillary and mandibular growth.

• Patients with medical contraindications to implant surgery (uncontrolled bleeding disorders, psychoses, prolonged therapy-resistant functional disorders, xerostomia, weakened immune system, illnesses requiring periodic use of steroids or uncontrollable endocrine disorders.

• Patients with drug or alcohol abuse.

• Patients with allergies or hypersensitivity to zirconium oxide (ZrO2), yttrium oxide (Y2O3), hafnium dioxide (HfO2), aluminium oxide (Al2O3), and titanium (Grade 4).

• Patients with medical contraindications to implant surgery (uncontrolled bleeding disorders, psychoses, prolonged therapy-resistant functional disorders, xerostomia, weakened immune system, illnesses requiring periodic use of steroids or uncontrollable endocrine disorders).

• Patients with conditions or circumstances, in the opinion of the Investigator, which would prevent completion of study participation or interfere with analysis of study results, such as history of non-compliance or unreliability.

• Pregnancy or intention to become pregnant at any point during the study duration.

Furthermore, patients with uncontrolled periodontitis and less than 3 mm of keratinized mucosa at the day of surgery will be excluded from the study. Controlled periodontitis is defined as treated periodontitis with two or less pockets that are < 4 mm in depth or the existence of = 20% bleeding on probing.

If the planned implant position is the second premolar, the adjacent molar must be present. Shortened arches with missing molars are not eligible in such a case.

Related Conditions & MeSH terms

• Dental Implants, Single-Tooth

Intervention

Device:
• Ceramic Dental Implant
The ceramic implant will be placed in healed extraction sockets in the premolar-to-premolar area in the mandible and maxilla for single tooth replacement followed by prosthetic loading after 4 months healing time. Type 4 surgery will be performed as defined by the ITI Consensus Statements for Implant Placement in Extraction Sockets: healed sites, typically around 16 weeks after tooth was extracted or after tooth was lost to allow complete healing of the ridge as well as soft- and hard tissue maturation. Both SG and CG receive routine treatment, only the choice of the implant material is defined by the study protocol.
• Titanium Dental Implant
The titanium implant will be placed in healed extraction sockets in the premolar-to-premolar area in the mandible and maxilla for single tooth replacement followed by prosthetic loading after 4 months healing time. Type 4 surgery will be performed as defined by the ITI Consensus Statements for Implant Placement in Extraction Sockets: healed sites, typically around 16 weeks after tooth was extracted or after tooth was lost to allow complete healing of the ridge as well as soft- and hard tissue maturation. Both SG and CG receive routine treatment, only the choice of the implant material is defined by the study protocol.

Locations

Country	Name	City	State
Germany	Dusseldorf University Hospital, Poliklinik für Zahnärztliche Prothetik	Düsseldorf
Hong Kong	The University of Hong Kong, Prince Philip Dental Hospital	Hong Kong
Portugal	Implantology Institute	Lisboa

Sponsors (2)

Lead Sponsor	Collaborator
Institut Straumann AG	Avania

Countries where clinical trial is conducted

Germany,  Hong Kong,  Portugal, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Adverse Events	Adverse Events will be recorded at every visit.	18 months after inclusion.
Other	Device Deficiencies	Any device complications and deficiencies will be recorded as Device Deficiencies.	18 months after inclusion.
Primary	Bone Level Change	Change in crestal bone level measured by analysis of standardized peri-apical xrays 12 months after loading [mm].	12 months after implant loading (final crown restoration)
Secondary	Implant survival	Implant survival rates 3, 6 months and 1 year after loading: yes/no	12 months after loading.
Secondary	14 item Oral Health Impact Profile (OHIP-14)	The local language version of the OPHIP-14 is a self-reported questionnaire that measures dysfunction, discomfort and disability attributed to oral conditions. The questionnaire focuses on seven dimensions of impact: Functional limitation; Pain; Psychological discomfort; Physical disability; Psychological disability; Social disability; Handicap. The patients will be asked to respond according to frequency of impact on a 5-point Likert scale coded never (score 0), hardly ever (score 1), occasionally (score 2), fairly often (score 3) and very often (score 4).	12 months after loading.