Accuracy and Primary Stability of Straight and Tapered Implants in Immediate Implant Placement Using Dynamic Navigation

Accuracy and Primary Stability of Straight and Tapered Implants Placed Into Fresh Extraction Sockets Using Dynamic Navigation

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04853121

Enrollment

Registered

2021-04-21

Start date

2021-02-01

Completion date

2022-01-31

Last updated

2022-03-31

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Tooth Diseases

Brief summary

Prosthetic-driven immediate implant placement for optimal aesthetic restoration has been increasing in demand during the last decades but requires higher accuracy. Dynamic navigation has been a reported better implant positioning. There are two main choices of implant macrogeometry: straight and tapered implants. One feature of implant design that may influence implants' accuracy is the taper of the implant body. However, their exact role is still needed to be investigated further. Besides, implant macrogeometry may influence primary stability, which is a prerequisite in achieving osseointegration. Therefore, we designed a randomized controlled clinical trial study to verify the clinical efficacy of the implant macrogeometry by comparing straight implants with tapered implants in immediate implant placement using dynamic navigation.

Interventions

PROCEDURETapered Implants

Tapered Implants are placed in fresh socket via dynamic navigation

PROCEDUREStraight Implants

Straight Implants are placed in fresh socket via dynamic navigation

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

1. ≥18 years old and in good health; 2. The maxillary incisor that cannot be retained due to non-periodontitis; 3. The buccal bone plate is complete; 4. No acute infection; 5. The extraction socket have at least 3-5 mm apical bone.

Exclusion criteria

1. General contraindications of oral implant surgery (such as immunodeficiency, long-term use of corticosteroids); 2. Treatments or diseases that may affect bone tissue metabolism (for example, taking bisphosphonates or receiving local radiotherapy); 3. Periodontitis history or uncontrolled periodontitis. Bleeding of probing (BOP) positive site ≥ 10%, or probing depth (PD) ≥ 4mm; 4. Heavy smokers or previous heavy smoking history (quit smoking time \<5 years or\> 20 cigarettes per day); 5. Refuse to participate in this trial.

Design outcomes

Primary

Measure	Time frame	Description
Accuracy	one week	mm

Secondary

Measure	Time frame	Description
Insetion torque value, ITV	surgery day	to detect primary stability
Implant Stability Quotient, ISQ	surgery day	to detect primary stability

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026