Single implant crowns placed immediately after molar tooth removal

Interventions for replacing missing teeth: single oral implants placed into fresh extraction sockets or early or completely healed sockets (immediate, early and delayed placement) to support single implant crowns for 5 years

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ANZCTR

Registry ID

ACTRN12608000569303

Enrollment

Registered

2008-11-12

Start date

2008-11-12

Completion date

Unknown

Last updated

2020-01-13

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

Conditions

None listed

Brief summary

Objectives: To evaluate the clinical outcomes, peri-implant parameters, microbial environment and success rates of three different placement times of single wide implants for replacing molar teeth. Materials and mehtods: Wide –diameter implants will be placed at different times following extraction of a single molar tooth in either mandibular or maxillary arches. A total of 39 participants will be randomly allocated to three equal sized groups (13 per group), a control and one of the test groups as follows: Control group: Implants placed after complete bone healing Test group 1: Implants immediately place after extraction Test group II: Implants placed after an early osseous healing time (3-5 weeks).

Interventions

Placement of single endosseous wide diameter titanium oral implants in the fresh extraction sockets or early healed sockets (3-5 weeks) in the molar region to support single implant crowns for 5 years. Surgical technique: Atraumatic extraction, sectioning of the molars and removal of each root individually. Sockets will be prepared with standard drills and tapered osteotomes to prepare the interradicular bone.

Study design

Allocation

Non-randomised trial

Intervention model

Parallel

Primary purpose

Treatment

Masking

Open (masking not used)

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

(1) Require a single molar tooth extraction in either jaw. (2) Aged 18 or over. (3) Physical status P1 or P2, according to the classification system of the American Society of Anesthesiologists (ASA) (4) Controlled oral hygiene. (5) Type I-III bone quality (Lekholm and Zarb, 1985). (6) Presence of 3-4 remaining osseous walls. (7) Good compliance and commitment to attend follow-up review appointments. (8) Willing to provide informed consent.

Exclusion criteria

(1) Traumatic tooth extraction. (2) Dehiscence in extraction socket wall greater than 4 mm. (3) Inadequate bone quality (Type IV) (Lekholm and Zarb, 1985). (4) Localized infection (suppuration at the surgical field) (5) Ankylosed teeth. (6) Aggressive or refractory periodontitis. (7)Severe bruxism or parafunctional habits. (8) Large occlusal discrepancies. (9) Medical risk patients.

Outcome results