Cleft Surgery Risks: Honest Answers for Parents
Medically reviewed by Dr. Sergio Calleja, DDS, MPH — Board-Certified Oral & Maxillofacial Surgeon · Last reviewed 2026-07-08
Handing your child to a surgical team is one of the hardest things a parent ever does, and you deserve complete honesty about the risks — not vague reassurance. The truthful summary: cleft operations are among the most practiced, most refined procedures in pediatric surgery, performed millions of times worldwide, and serious complications are uncommon.
Below are the risks that genuinely matter, what the published evidence says about how often they occur, and what we specifically do to reduce each one.
Anesthesia in Infants
This is the fear most parents name first, and it deserves a direct answer. Modern pediatric anesthesia is very safe: your baby is cared for by anesthesia teams experienced with infants, in a hospital equipped for children, with continuous monitoring throughout. Serious anesthetic complications in healthy infants having elective surgery are rare, and the timing of cleft repairs — waiting until your baby is strong, feeding well, and gaining weight — is itself a safety measure.
How we reduce this riskDr. Calleja operates with pediatric anesthesia teams in a hospital setting, and surgery is scheduled only when your baby meets readiness benchmarks for age, weight, and overall health. Any cold, infection, or feeding concern near the surgery date is grounds to reschedule — the calendar never outranks safety.
Fistula After Palate Repair
A fistula is a small hole that can re-form in the repaired palate as it heals. Published rates vary with cleft width and type, but roughly 5–15% is a representative range across modern series — wider and bilateral clefts sit at the higher end. Many fistulas are tiny and cause no symptoms; those that leak liquid into the nose or affect speech can be surgically closed.
How we reduce this riskCareful, tension-free repair technique is the main defense — fistulas form where healing tissue is stretched too tight. Every palate is examined at follow-up visits, and if a symptomatic fistula appears, repair is planned deliberately rather than rushed.
Velopharyngeal Insufficiency (VPI) — Speech Needing Further Surgery
Even after a technically perfect palate repair, the palate sometimes cannot fully seal off the nose during speech, letting air escape and making speech sound nasal. Systematic reviews report that roughly 17–20% of children need a secondary speech operation. This reflects biology — the amount of muscle and tissue the cleft left to work with — more than surgical error.
How we reduce this riskThe team's speech-language pathologist evaluates your child regularly from toddlerhood, so VPI is caught early and treated first with therapy. When surgery is needed, it is a well-established procedure with good outcomes — and having the same team throughout means nothing falls through the cracks.
Bone Graft Resorption
Occasionally the body resorbs (breaks down) part of an alveolar bone graft before the adult tooth erupts into it, and a small minority of children need the graft repeated. Success rates for alveolar bone grafting are high overall, and a repeat graft, when needed, usually succeeds.
How we reduce this riskCorrect timing against the canine's development, good oral hygiene before surgery, orthodontic preparation of the arch, and protecting the graft site during healing are the proven levers — and all four are managed actively by the team.
Scarring and the Likelihood of Revision
Every cleft repair leaves a scar, and here is the honest framing: minor revisions are an expected part of the cleft journey, not a failure of it. As your child grows, a scar that looked ideal at age two may need a touch-up at age eight, and the nose is commonly refined once growth is complete. Cleft care is designed around growth — surgery, growth, refinement.
How we reduce this riskRepairs are designed along the lip's natural lines to make scars as inconspicuous as possible, scar care instructions (massage, sun protection) are part of every post-op plan, and revisions are timed to growth milestones so each one lasts.
Midface Growth Restriction — Why Some Cleft Patients Need Jaw Surgery Later
In some children with a repaired cleft palate, the upper jaw (maxilla) grows less forward than the rest of the face, producing an underbite in adolescence. This is a known long-term effect of the cleft and its necessary repairs, and it is why the team monitors jaw growth for years. When it occurs, corrective jaw surgery at skeletal maturity restores balance.
How we reduce this riskGrowth is tracked at team visits with orthodontic records, so families are never blindsided — if jaw surgery becomes likely, you will know years ahead. And because Dr. Calleja performs cleft orthognathic surgery himself, the final stage stays within the same surgical home.
How to Think About These Numbers
Notice what the risk list is mostly made of: things that can be fixed. A fistula can be closed, VPI can be corrected, a graft can be repeated, a scar can be revised, a jaw can be repositioned. The cleft journey has built-in checkpoints precisely so that anything imperfect is caught and addressed while your child is still growing. What the evidence does not show is children left worse off by treatment — untreated clefts, by contrast, carry lifelong consequences for feeding, speech, hearing, and dental health.
Training matters too. Cleft surgery is a specific craft within surgery, and outcomes track with team experience. Dr. Calleja is board-certified by the American Board of Oral and Maxillofacial Surgery and completed a dedicated fellowship in Cleft & Craniomaxillofacial Surgery at Charleston Area Medical Center Children's Hospital — training focused entirely on these operations and the team care around them.
Call Us Right Away If You Notice
- Fever above 100.4°F (38°C) after surgery
- Your baby refuses feeds or takes much less than usual for more than a few hours
- Bleeding from the mouth or nose that does not stop with gentle pressure — more than light pink-tinged saliva
- Signs of dehydration: fewer wet diapers, no tears when crying, a dry mouth, or unusual sleepiness
- The repair site opens, or you notice increasing redness, swelling, or discharge
- Trouble breathing — call 911 first for any emergency
Office: (301) 645-6911 (Waldorf) · (301) 863-8107 (California, MD). For emergencies, call 911.
Frequently Asked Questions
Is anesthesia safe for my baby?
Modern pediatric anesthesia is very safe for healthy infants having planned surgery. Your baby is cared for by anesthesia teams experienced with infants, in a hospital equipped for children, with continuous monitoring from start to finish. Timing the repair for when your baby is strong and thriving — rather than as early as possible — is itself part of the safety plan.
What is a palatal fistula and how common is it?
A fistula is a small hole that can re-form in the repaired palate during healing. Published rates vary widely with cleft type and width, with roughly 5–15% a representative modern range. Many fistulas are small and harmless; ones that leak liquid into the nose or affect speech can be repaired with a further operation.
What happens if my child's speech is still nasal after palate repair?
First, speech therapy — many issues respond to it. If air continues escaping through the nose because the palate cannot fully seal (velopharyngeal insufficiency, or VPI), a secondary speech operation can fix the seal. Reviews suggest roughly one in five children with a repaired cleft palate needs this step. It is a recognized stage of the journey with good outcomes, not a sign that something went wrong.
If my child needs a revision, does that mean the first surgery failed?
No — and this is one of the most important mindset shifts for cleft parents. Children grow, and a repair that is ideal at age two sits on a face that will change enormously by age eighteen. Planned refinements — a scar touch-up, a nose refinement, a speech procedure — are how cleft care works with growth rather than against it. The team's long follow-up exists exactly for this.
Can a cleft come back after it is repaired?
The repair itself does not undo. What can happen: a small fistula can form in the palate (repairable), and the upper jaw can grow less forward over the years, changing the bite (correctable with jaw surgery at maturity). Neither is the cleft "returning" — they are known, monitored, and treatable parts of long-term cleft care.
Have Questions About Cleft & Craniofacial Surgery?
Dr. Calleja evaluates every case personally at the Waldorf and California, MD offices — consultations in English or Spanish.
This page is general patient education, not personal medical advice. Every patient's anatomy and health history are different — treatment details, risks, and recovery vary case by case and are reviewed with you during your consultation. For emergencies, call 911.