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Background <p>Surgical options for chronic recurrent temporomandibular joint (TMJ) dislocation remain heterogeneous. Digitally planned patient-specific onlay augmentation may provide a reproducible mechanical stop while minimizing intraoperative guesswork.</p> Methods <p>Eleven patients (&gt; 16 years) with chronic recurrent TMJ dislocation/hypermobility (maximal incisal opening &gt; 40&#xa0;mm) underwent augmentation eminoplasty using a digitally planned patient-specific implant and CAD/CAM workflow. Clinical outcomes included pain (VAS 0–10) and maximal incisal opening (MIO) assessed preoperatively, at 2 weeks, and at 6 months; radiologic assessment included panoramic TMJ views and MSCT at 6 months.</p> Results <p>The cohort was predominantly female (72.7%) with mean age 20.55 ± 4.08 years.</p> <p>Mean VAS pain decreased from 8.80±0.53 preoperatively to 8.07±0.73 at 2 weeks and 6.29±1.29 at 6 months (all pairwise comparisons p&lt;0.001). </p> <p>Mouth opening decreased significantly after surgery and remained reduced at follow-up; there was no significant difference between 2-week and 6-month mouth opening (p=0.082). </p> <p>Two patients (18.2%) developed right-sided postoperative infection requiring implant removal. Clinical signs suggestive of infection were first recognized at approximately 3 weeks postoperatively and ultimately led to implant removal at around 2 months after failure of initial conservative treatment. No clinical recurrence of dislocation/open-lock was documented during the available 6-month follow-up.</p> Conclusions <p>Digitally planned patient-specific onlay eminoplasty demonstrated short-term feasibility, reduction in pain, and controlled postoperative mouth opening; however, the observed infection rate and limited functional follow-up warrant cautious interpretation.”</p>

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Template-guided digitally planned patient-specific implant augmentation eminoplasty for chronic recurrent temporomandibular joint dislocation: a prospective study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月29日

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  • Mostafa Gafar Ibrahim,
  • Gamal Ali Swaify,
  • Ibrahim Zaitoun,
  • Ahmed Mohamed Medra,
  • Ahmed Yehia Kosba,
  • Mohamed Abdeldayem

摘要

Background

Surgical options for chronic recurrent temporomandibular joint (TMJ) dislocation remain heterogeneous. Digitally planned patient-specific onlay augmentation may provide a reproducible mechanical stop while minimizing intraoperative guesswork.

Methods

Eleven patients (> 16 years) with chronic recurrent TMJ dislocation/hypermobility (maximal incisal opening > 40 mm) underwent augmentation eminoplasty using a digitally planned patient-specific implant and CAD/CAM workflow. Clinical outcomes included pain (VAS 0–10) and maximal incisal opening (MIO) assessed preoperatively, at 2 weeks, and at 6 months; radiologic assessment included panoramic TMJ views and MSCT at 6 months.

Results

The cohort was predominantly female (72.7%) with mean age 20.55 ± 4.08 years.

Mean VAS pain decreased from 8.80±0.53 preoperatively to 8.07±0.73 at 2 weeks and 6.29±1.29 at 6 months (all pairwise comparisons p<0.001).

Mouth opening decreased significantly after surgery and remained reduced at follow-up; there was no significant difference between 2-week and 6-month mouth opening (p=0.082).

Two patients (18.2%) developed right-sided postoperative infection requiring implant removal. Clinical signs suggestive of infection were first recognized at approximately 3 weeks postoperatively and ultimately led to implant removal at around 2 months after failure of initial conservative treatment. No clinical recurrence of dislocation/open-lock was documented during the available 6-month follow-up.

Conclusions

Digitally planned patient-specific onlay eminoplasty demonstrated short-term feasibility, reduction in pain, and controlled postoperative mouth opening; however, the observed infection rate and limited functional follow-up warrant cautious interpretation.”