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TerminatedNCT04778709Updated Dec 1, 2023Results posted

Bone Graft Particle Size on Bone Vitality and Volume

An interventional study of Puros allograft in Bilateral Sinus Pneumatization and Posterior Maxillary Ridge Atrophy Due to Extraction, sponsored by NYU College of Dentistry. Terminated at 1 site in United States. Open to participants aged 25 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-12-01.

Sponsored by NYU College of Dentistry · Not applicable, Interventional, and Treatment

Why this study was terminated
Original PI who is no longer at the institution, the sponsor of this research study, Zimmer Biomet, along with the current PI have decided to close enrollment to the study and to early terminate the study.
Phase
Not applicable
Study type
Interventional
Enrollment
4
Allocation
Randomized
Ages
25 Years to 65 Years
Sex
All
01

Study summary

To determine the effects of small and large bone graft particles vs large particles alone on percent vital bone, percent residual graft material, measured histologically from bone biopsies of the grafted site taken at the time of dental implant placement from subjects undergoing sinus augmentation for the placement of dental implants. Dental radiographs taken post operatively will be used to estimate bone graft volume differences between conditions.

Read the detailed description

The proposed study is a Randomized, single-masked, split-mouth, single center study.

About 20 subjects will be screened in order to randomize 10 study subjects. 10 patients who needing bilateral sinus augmentation procedure using the lateral window technique will be randomized using computer generated randomized technique.

At the day of the surgical procedure each tooth sites will be randomized 1:1 into one of the following bone grafts to either the right or left side of the mouth.:

  • Bone graft A: A mixture of 25% small-particle cortical allograft, 25% large-particle cortical allograft, 25% small-particle cancellous allograft, and 25% large-particle cancellous allograft is used for one sinus (N=10)
  • Bone graft B: 100% large particle cancellous allograft for the contralateral sinus (N=10) Immediately after the sinus augmentation surgery a CBCT will be acquired and will be compared to a second CBCT prior to implant placement in order to compare the volumetric changes in the sinus.

At the visit of implant placement, a bone core will be collected from both sinuses for histomorphometric evaluation to evaluate the residual graft particles, the new vital bone formation and the amount of soft tissue components.

02

Conditions studied

  • Bilateral Sinus Pneumatization
  • Posterior Maxillary Ridge Atrophy Due to Extraction

Keywords

  • Sinus floor augmentation
  • Bone graft
  • Allograft
  • Dental implants
  • Maxillary sinus
03

In context

Lead sponsor

NYU College of Dentistry is the lead sponsor of 10 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
25 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Good physical health
  • Capable of maintaining good oral hygiene
  • Missing posterior maxillary teeth on both sides and less than 5 mm of residual jaw bone requiring maxillary sinus augmentation prior to dental implant placement
  • Capable and willing to give informed consent

Exclusion criteria

Exclusion Criteria:

  • The presence of underlying medical conditions that may pose an undue risk for sinus surgery
  • Patients with untreated oral infections
  • Pregnant and lactating females
  • Individuals who have the habit of smoking and/or tobacco chewing
  • Patients not willing to participate in the study
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
4 participants (actual)

Study arms

  • Experimental
    Bone Graft A

    Bone Graft A: Mixture of 25% small-particle cortical, 25% large particle cortical, 25% small particle cancellous, 25% large particle cancellous allograft

    Device: Puros allograft

  • Active comparator
    Bone Graft B

    Bone Graft B: 100% large particle cancellous allograft

    Device: Puros allograft

Interventions

  • DevicePuros allograft

    Bilateral sinus augmentation procedure using the lateral window technique. Graft material combination A or B will be randomly assigned to right and left sinus. Each subject will receive the following bone allograft material: Four to six grams of commercially available human donor bone allograft (Puros Allograft Bone Particles, Zimmer Biomet, Palm Beach Gardens, FL USA) consisting of Graft A cortical and cancellous bone chips of both 250-1000 microns and 1000-2000 microns size, or Graft B for contralateral sinus: cancellous 1000-2000 microns size alone.

06

What researchers measure

Primary outcomes

  1. Quality of Bone

    Assessment of the quality of bone that is generated in the grafted sinuses by measuring the: percent vital bone formation, percent of inflammatory tissue if any

    Time frame: After surgery, 8 months, 1 year

  2. Quality of Bone

    Assessment of the quality of bone that is generated in the grafted sinuses by measuring the: percent of residual bone graft material

    Time frame: After surgery, 8 months, 1 year

  3. Quality of Bone

    Assessment of the quality of bone that is generated in the grafted sinuses by measuring the: percent of inflammatory tissue if any

    Time frame: After surgery, 8 months, 1 year

Secondary outcomes

  1. Bone Volume Stability

    Assessment of bone volume stability through CBCT analysis comparing it from the time of placement, 8 months post-grafting and 1 year post-implantation

    Time frame: After surgery, 8 months, 1 year

07

Results

Posted Dec 1, 2023

Participant flow

Participant flow — Overall Study
MilestoneBone Graft ABone Graft B
Started22
Completed00
Not completed22

Outcome measures

PrimaryQuality of Bone

Assessment of the quality of bone that is generated in the grafted sinuses by measuring the: percent vital bone formation, percent of inflammatory tissue if any

Time frame:
After surgery, 8 months, 1 year

No measurements were reported for this outcome.

PrimaryQuality of Bone

Assessment of the quality of bone that is generated in the grafted sinuses by measuring the: percent of residual bone graft material

Time frame:
After surgery, 8 months, 1 year

No measurements were reported for this outcome.

PrimaryQuality of Bone

Assessment of the quality of bone that is generated in the grafted sinuses by measuring the: percent of inflammatory tissue if any

Time frame:
After surgery, 8 months, 1 year

No measurements were reported for this outcome.

SecondaryBone Volume Stability

Assessment of bone volume stability through CBCT analysis comparing it from the time of placement, 8 months post-grafting and 1 year post-implantation

Time frame:
After surgery, 8 months, 1 year

No measurements were reported for this outcome.

Adverse events

Collected over 14 months. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Bone Graft A0/2 (0%)0/2 (0%)0/2 (0%)
Bone Graft B0/2 (0%)0/2 (0%)0/2 (0%)

Baseline characteristics

Age, Customized
Age, Customized(Participants)Bone Graft ABone Graft BTotal
18-25 years000
26-35 years000
36-45 years000
46-55 years000
56-65 years224
Sex: Female, Male
Sex: Female, Male(Participants)Bone Graft ABone Graft BTotal
Female123
Male101
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Bone Graft ABone Graft BTotal
Hispanic011
Non-Hispanic White213
Region of Enrollment
Region of Enrollment(participants)Bone Graft ABone Graft BTotal
United States224
08

Study locations

1 site
  • Department of Periodontology and Implant Dentistry
    New York, New York 10010, United States
09

References and documents

Study documents

  • Protocol and statistical analysis plan · Jun 3, 2021

Documents are hosted by the registry — open the source record to download them.

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Nov 2020 to primary completion in Feb 2022, 14 months.

Results were first posted in Dec 2023, 1 year 10 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 30, 2021
First posted
Mar 3, 2021
StartActual
Nov 13, 2020
Primary completionActual
Feb 1, 2022
CompletionActual
Feb 1, 2022
Results first posted
Dec 1, 2023
Last update
Dec 1, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 1, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04778709
Lead sponsor
NYU College of Dentistry
Responsible party
Katerina Georgantza, DDS (Clinical Assistant Professor, NYU College of Dentistry) — Principal investigator
First posted
Mar 3, 2021
Start date
Nov 13, 2020
Primary completion
Feb 1, 2022
Completion
Feb 1, 2022
Results posted
Dec 1, 2023
Last update
Dec 1, 2023

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Nov 2023. You cannot join it, but the record below documents what was studied.

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