Evaluation of Two Types of Dental Implants in Lower Jaws

Rehabilitation of Posterior Atrophic Edentulous Mandibles with Prostheses Supported by 4 mm Long Implants or Longer Implants in Vertically Augmented Bone

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT2015051122226N1

Enrollment

Registered

2016-04-22

Start date

2016-04-01

Completion date

Unknown

Last updated

2018-02-22

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

Conditions

Mandible, Edentulous, Partially. Atrophy of edentulous alveolar ridge

Interventions

Intervention 1: Intervention group:4-mm long Straumann SLActive implant (4SI, Straumann AG, Basel, Switzerland) during 1- year follow-up. Intervention 2: Control group: 10 or 8 mm long Straumann impla

Treatment - Devices

Treatment - Surgery

Intervention group:4-mm long Straumann SLActive implant (4SI, Straumann AG, Basel, Switzerland) during 1- year follow-up

Control group: 10 or 8 mm long Straumann implant in augmented bone (Straumann AG, Basel, Switzerland) during 1- year follow-up

Eligibility

Sex/Gender

All

Age

18 Years to 75 Years

Inclusion criteria

Inclusion criteria: Inclusion criteria: ?Bilateral edentulism in posterior mandible with a similar degree of bone atrophy on both ?sides requiring two to four dental implants; ?Vertical bone heights have to be 5 mm to 7.9 mm above the mandibular canals. Exclusion criteria:? General contraindications to implant surgery subjected to irradiation in the head and neck area; immunosuppressed or immunocompromised; treated or under treatment with intravenous amino-bisphosphonates; untreated periodontitis; poor oral hygiene and motivation; uncontrolled diabetes; pregnant or nursing; substance abuse; psychiatric problems or unrealistic expectations; lack of opposite occluding dentition in the area; acute or chronic infection/inflammation in the area intended for implant placement; extraction sites with less than 3 months of healing.

Exclusion criteria

Exclusion criteria:

Design outcomes

Primary

Measure	Time frame
Peri-implant marginal bone level changes. Timepoint: at implant placement (6 months after GBR), at delivery of the prostheses (2 months after implantation), 1 year after loading. Method of measurement: Intraoral radiographs.	—

Secondary

Measure	Time frame
Implant and prosthesis failures. Timepoint: during 1 years follow-up. Method of measurement: Observational.	—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactDr Tahereh Bitaraf

Dental Implant Research Center

t-bitaraf@razi.tums.ac.irtaherehbitaraf@yahoo.com+98 21 8897 8351

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026