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Updated: Nov 13, 2025

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Does Overfilling Smooth Inflatable Saline-Filled Breast Implants Decrease the Deflation Rate? Experience with 4761

Ted Eisenberg1

  • 1Nazareth Hospital, 2375 Woodward Street, Suite 102, Philadelphia, PA, 19115, USA. info@lookingnatural.com.

Aesthetic Plastic Surgery
|March 13, 2021
PubMed
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Correction to: Does Overfilling Smooth Inflatable Saline-Filled Breast Implants Decrease the Deflation Rate? Experience with 4761 Augmentation Mammaplasty Patients.

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Invited response on: "Does Overfilling Smooth Inflatable Saline-Filled Breast Implants Decrease the Deflation Rate? Experience With 4761 Augmentation Mammaplasty Patients".

Aesthetic plastic surgery·2021

This study investigated whether overfilling saline breast implants affects their deflation rates. Researchers compared two groups of patients who received the same implant model but with different fill volumes. One group had implants filled within manufacturer guidelines, while the other had implants overfilled by 10-13%. The study found that overfilled implants had a significantly lower deflation rate. The protective effect of overfilling was statistically significant. Fold failure was the main cause of deflation in both groups. Implants filled within guidelines showed a yearly increase in deflation rate, but overfilled implants did not. These findings suggest that overfilling may improve implant durability.

Area of Science:

  • Plastic and reconstructive surgery
  • Medical device outcomes research
  • Breast implant safety analysis

Background:

Saline breast implants have been widely used for augmentation procedures, but their long-term reliability remains a concern. Prior research has shown that deflation rates vary with implant design and surgical technique. However, no large-scale study had resolved whether overfilling implants affects their longevity. The commonly reported annual deflation rate of 1% lacked robust validation. This gap motivated an investigation into implant fill volumes and their impact on device failure. The study aimed to compare implants filled within vs. beyond manufacturer guidelines. No prior work had resolved the relationship between fill volume and deflation risk. The field needed data from a large patient cohort to clarify this issue. This paper provides a detailed analysis of implant performance over time.

Purpose Of The Study:

The study aimed to determine if overfilling saline breast implants reduces their deflation rates. The specific problem addressed is the lack of evidence on whether exceeding manufacturer fill recommendations improves implant durability. The motivation stems from anecdotal reports suggesting that overfilled implants last longer. The authors sought to test this hypothesis using a large patient dataset. They compared two groups of women who received the same implant model but with different fill volumes. The study focused on the Mentor Style 1600 implant, a smooth, round moderate profile device. The goal was to quantify deflation rates in both groups and assess the statistical significance of the difference. This approach allowed for a direct comparison of implant longevity under two conditions.

Keywords:
Breast augmentationBreast implantsDeflation rate of implantsImplant deflationOverfilling saline implantsSaline implantsSaline breast implantsBreast augmentationImplant deflation ratesPlastic surgery outcomes

Frequently Asked Questions

The study found that overfilling Mentor Style 1600 saline breast implants by 10-13% reduced deflation rates from 4.02% to 1.83%.

The study used Mentor Style 1600 saline breast implants, which are smooth, round moderate profile devices.

The authors observed that fold failure was the primary reason for deflation in both groups of patients.

Deflation rates were tracked using clinical records and compared between two patient groups based on fill volume.

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Main Methods:

The study used a retrospective comparative design with data collected from 4761 patients who underwent breast augmentation. Patients were divided into two groups based on implant fill volume. Group 1 had implants filled within manufacturer guidelines, while Group 2 had implants overfilled by 10-13%. All surgeries used the same implant model and placement technique. Data collection spanned two time periods: 2002-2009 and 2011-2018. Implant deflation was tracked over time using clinical records. Statistical analysis compared deflation rates between the two groups. The study also evaluated yearly increases in deflation rates to assess long-term performance.

Main Results:

Group 1 had a deflation rate of 4.02%, while Group 2 had a rate of 1.83%. This difference was statistically significant with a p-value less than 0.00001. The Z-score of 4.17 confirmed the protective effect of overfilling. Fold failure was the primary cause of deflation in both groups. Implants filled within guidelines showed a yearly increase in deflation rate of 0.41%. In contrast, overfilled implants did not show a yearly increase in deflation rate. The study found that overfilling reduced the risk of device failure. These findings suggest a strong association between fill volume and implant longevity.

Conclusions:

The authors concluded that overfilling Mentor Style 1600 saline breast implants significantly reduced deflation rates. The protective effect of overfilling was confirmed with a high level of statistical significance. Fold failure remained the main cause of device failure in both groups. The study found that implants filled within guidelines had a yearly increase in deflation rate. Overfilled implants did not show this increase, suggesting improved durability. The results support the hypothesis that overfilling improves implant longevity. The authors propose that this finding could influence clinical practice. They suggest that overfilling may be a viable strategy to reduce deflation risk.

Implants filled within manufacturer guidelines had a yearly increase in deflation rate of 0.41%.

The authors propose that overfilling may be a viable strategy to reduce deflation risk in saline breast implants.