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Clinical outcomes of single crowns supported by narrow implant in posterior jaws: a randomized controlled trial

Clinical evaluation of single crowns supported by narrow diameter implants or standard diameter implants with bone augmentation in atrophic posterior jaws: a randomized controlled trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR1800020426
Enrollment
Unknown
Registered
2018-12-29
Start date
2019-01-04
Completion date
Unknown
Last updated
2019-01-14

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

Conditions

partial edentulism

Interventions

NDI:narrow diameter implant
SDI:standard implant with simutaneous bone grafting

Sponsors

Shanghai 9th People's Hospital affiliated to Shanghai Jiaotong University School of Medicine
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Aged =18 years old and in good health; 2. presence of single premolar or molar site to receive implant-supported single crown; 3. available bone width ranging from 5 to 6mm and bone height =10mm; 4. sufficient mesio-distal distance of edentulous gap; 5. sound antagonist teeth and neighbouring teeth; 6. absence of systemic and local condition incompatible with implant placement; 7. willing to provide informed consent and capable of complying the study protocol.

Exclusion criteria

Exclusion criteria: 1. uncontrolled diabetes mellitus or other systemic disorders; 2. untreated periodontal disease; 3. Heavy smokers (=10 cigarettes/day); 4. insufficient bone quality to achieve implant stability; 5. previous implant installation or bone grafting at the implant site; 6. Unwilling to participate in the present study; 7. extensive bone augmentation needed during surgery.

Design outcomes

Primary

MeasureTime frame
implant survival rate;

Secondary

MeasureTime frame
mechanical complications;marginal bone loss;peri-implant soft tissue condition;patient-centered outcomes;

Countries

China

Contacts

Public ContactHongchang Lai

Shanghai 9th People's Hospital affiliated to Shanghai Jiaotong University School of Medicine

hongchang_lai@126.com+86 13501881537

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 11, 2026