Recently, someone from my podcast community sent me a thoughtful question. Their dentist had recommended cephalexin and chlorhexidine after dental surgery, and they wanted to know whether there were more natural alternatives.
I hear versions of this question often, and it opens the door to a much larger conversation about how we approach healing in dentistry.
First, it’s important to understand that cephalexin and chlorhexidine are very different therapies. Cephalexin is a systemic antibiotic, while chlorhexidine is a topical antiseptic. If an antibiotic has been prescribed for a specific infection or medical indication, I would never recommend simply replacing it with a home remedy. That conversation needs to happen with the dentist or surgeon who understands your procedure, medical history, and individual risks.
But when it comes to the routine use of chlorhexidine after oral surgery, my approach is different.
Why I Don’t Routinely Use Chlorhexidine
Chlorhexidine has been used in dentistry for decades. It’s a powerful antimicrobial, and clinical studies support its short-term use in certain situations, including reducing the risk of alveolar osteitis—or dry socket—following some extractions.
So the question isn’t whether chlorhexidine works as an antimicrobial.
The question I ask is:
What else is happening biologically when we expose a fresh surgical site to it?
After surgery, our goal isn’t simply to kill bacteria. We need to create an environment that allows the body to regenerate and repair.
And that requires healthy cells.
We Need to Think About the Fibroblasts
Fibroblasts play an essential role in wound healing. They help produce collagen, build the extracellular matrix, and repair connective tissue.
Laboratory research has demonstrated that chlorhexidine can be cytotoxic to human gingival fibroblasts, with reductions in cell viability, adhesion, and proliferation depending on concentration and exposure.
That raises a question I believe every clinician should consider:
Why would we routinely expose a healing surgical wound to an antiseptic that may adversely affect some of the very cells we’re depending upon for tissue repair?
This doesn’t mean laboratory findings automatically translate into impaired clinical healing. Concentration, duration of exposure, formulation, procedure, and individual patient factors all matter.
And there are certainly clinical situations where a dentist may determine that chlorhexidine’s benefits outweigh those considerations.
My point is that routine doesn’t have to mean automatic.
A Healthy Mouth Is Not a Sterile Mouth
There’s another piece of this conversation that is especially important to me: the oral microbiome.
Our mouths contain complex communities of bacteria, fungi, and other microorganisms. Many are compatible with health. Problems occur when this ecosystem becomes imbalanced and pathogenic organisms begin to dominate.
So my objective isn’t to sterilize the mouth.
It’s to control pathogens while supporting an environment in which healthy tissues and a balanced microbiome can recover.
This is an important distinction in integrative dentistry.
Instead of asking only, “How effectively does this product kill bacteria?” I also want to know:
- What does it do to healthy human cells?
- How might it affect tissue regeneration?
- What does it do to the oral microbial ecosystem?
- Is it necessary for this particular patient and procedure?
Those questions change how we think about postoperative care.
What I Do Differently in My Practice
Postoperative care should always be individualized according to the procedure, medical history, periodontal condition, infection risk, and the patient’s ability to heal.
When appropriate, I use local ozone therapy during surgical procedures as part of my clinical protocol.
For home care, rather than routinely recommending chlorhexidine, I often use TRI-OLOGY Restoring Rinse, formulated with ingredients including xylitol, aloe vera, wheatgrass, sweet almond oil, peppermint oil, and carbamide peroxide.
My objective is to support the healing environment without routinely exposing the surgical site to chlorhexidine when I don’t believe it’s necessary.
That does not mean a non-chlorhexidine rinse should be considered an equivalent substitute when chlorhexidine has been prescribed for a specific clinical indication. Treatment should always be based on the individual patient.
What About the Antibiotic?
The original question also mentioned cephalexin, and I want to make an important distinction here.
I’m a strong believer in thoughtful antibiotic stewardship. Antibiotics should be prescribed when clinically indicated, rather than automatically.
But if you’ve been prescribed an antibiotic following surgery, don’t simply replace it with herbs, supplements, rinses, or another natural remedy.
Instead, have a conversation with your treating dentist or surgeon.
Ask:
Why do I need this antibiotic in my particular case?
Are we treating an existing infection or preventing one because of a specific risk?
What are the risks and benefits of taking it?
Is there an evidence-based alternative appropriate for me?
An informed patient should understand why a medication is being prescribed.
This Is Bigger Than Chlorhexidine
For me, this conversation represents something much larger about the direction dentistry is heading.
We absolutely need to control infection and pathogenic bacteria.
But we also need to respect the biology we’re trying to heal.
That means considering the cells, tissues, immune response, microbiome, nutrition, systemic health, and healing capacity of the individual patient when we make clinical decisions.
Integrative dentistry isn’t about rejecting conventional dentistry or replacing evidence-based treatment with something “natural.”
It’s about asking better questions and looking at the patient more completely.
The future of dentistry isn’t about creating a sterile mouth. It’s about controlling disease while preserving the biology necessary for health and healing.
