On-Premises vs Cloud
Dental Practice Management
Cloud is not automatically better. On-prem is not automatically behind. Here is what actually differs — and how to decide which is right for your practice today.
The dental software industry has been pushing cloud-hosted practice management for the better part of a decade. Dentrix Ascend, Curve Dental, and Denticon (among others) represent a genuine shift in how practice software is delivered and maintained. On-premises systems — traditional Dentrix, Eaglesoft, and Open Dental running on a local server — remain widely used and, in many situations, the more appropriate choice.
This guide does not have an agenda. We have helped practices migrate to the cloud and helped practices stay on-prem for good reasons. The right answer depends on your practice's situation, your internet infrastructure, your growth plans, and your tolerance for different kinds of risk. We will lay out the real differences so you can make an informed decision.
Systems referenced as "on-prem": Dentrix (traditional), Eaglesoft, Open Dental. Systems referenced as "cloud": Dentrix Ascend, Curve Dental, Denticon. The comparison applies broadly to both categories.
The Full Comparison
| Area | On-Premises | Cloud-Hosted |
|---|---|---|
| IT responsibility | You own the server, OS, database, network, and backup infrastructure. IT maintains all layers. | Vendor owns the server infrastructure. You are responsible for workstations, network, and internet connection. |
| Internet dependence | None for core function. Local network issues can disrupt access, but internet outage does not stop the practice. | Complete. Internet outage = practice management system is unavailable. No offline mode in most cloud systems. |
| Upfront cost | Higher. Server hardware ($3,000–$8,000 typical), software licenses, installation labor. | Lower. No server hardware. Primary upfront cost is migration and data conversion. |
| Ongoing monthly cost | Software support contracts, IT managed services, hardware maintenance. Can be lower per month once hardware is paid off. | Per-user or per-location SaaS subscription, ongoing. Total cost of ownership over 5+ years is often higher than on-prem for established practices. |
| Backup responsibility | Fully on you. Requires a tested backup strategy including offsite/cloud copy. Most data loss incidents in dental IT happen here. | Vendor handles primary backup. You are still responsible for confirming the vendor's backup/recovery SLA and data retention terms. |
| Offline operation | Full operation during internet outages. Network problems are local and recoverable without vendor dependency. | Most cloud PM systems do not support offline mode. Internet outage means working from printed schedules or paper — or not working at all. |
| Multi-location access | Requires VPN tunnels between locations or Citrix/RDS for remote access. Adds IT complexity. | Native multi-location access is a core selling point. All locations share one patient record with no VPN required. |
| Customization | More. Direct database access, custom reports, third-party tool integration at the database level. | Less. Limited to what the vendor exposes in their API or UI. Advanced customization is often not possible. |
| Data portability | High. Database is on your hardware. You can export and migrate with the right tools. | Varies by vendor. Review the data export clause in your contract before signing. Some cloud vendors make leaving expensive. |
| Failure modes | Server hardware failure, local network issue, backup failure. Recoverable with the right DR plan. | Internet outage, vendor outage, vendor discontinues product. Fewer but different risks. |
The Decisions That Actually Matter
Internet reliability: the make-or-break factor for cloud
Cloud practice management is only as reliable as your internet connection. For practices in urban areas with multiple ISP options and fiber availability, internet uptime is rarely a concern — most providers offer 99.9%+ SLAs, and a cellular backup connection provides a fallback during outages.
For practices in rural or semi-rural areas, internet reliability is a genuine constraint. If your ISP averages two 30-minute outages per month, those are two days where your cloud PM system is unavailable during the workday. On-premises software has no such dependency. We have helped practices in rural markets decide to stay on-prem for exactly this reason, even when a cloud system had clinical advantages they wanted.
Before choosing a cloud PM system, know your internet uptime history, know your failover options (LTE backup), and run a speed test from every operatory workstation at peak clinical hours. Cloud PM software's performance degrades as latency increases — and dental imaging data is large.
Total cost of ownership: the long view
Cloud PM software is marketed on low upfront cost and "no server needed." That is accurate. What is less often discussed is the 5-year total cost of ownership. SaaS subscription costs accumulate. A practice paying $700/month for a cloud PM system pays $42,000 over five years — before any price increases. An on-premises system with a $6,000 server, $3,000 in software, and $150/month in support contracts costs roughly $18,000 over the same period, assuming one server replacement at year 5.
The on-premises system also requires IT maintenance labor, which is a real cost. The cloud system shifts infrastructure management to the vendor but adds permanent monthly subscription overhead. Neither is automatically cheaper — it depends on your practice's scale, your IT costs, and your subscription tier.
For new practices or practices in a growth phase, cloud's lower upfront cost is a genuine advantage. For established practices with functional infrastructure, the math often favors continuing on-prem for another hardware cycle and reassessing at migration time.
Backup and data loss: where on-prem practices get hurt
The majority of serious data loss incidents we see in dental practices are on-prem environments with inadequate backup strategies — a NAS-only backup encrypted by ransomware, a backup that has not been tested in 18 months, or a backup that runs but does not create application-consistent database snapshots. Cloud PM software eliminates this category of risk for the database tier — the vendor handles it.
However, cloud PM does not eliminate all data risk. Imaging data on local CBCT and sensor systems is still your responsibility regardless of where the PM database lives. Patient photos, scanned documents, and any data that does not live in the cloud PM system needs its own backup strategy. "I'm on the cloud now" does not mean you have no backup obligations.
If a practice has been burned by a backup failure or has never had a tested disaster recovery plan, cloud PM removes one major failure mode from their risk profile. That is a meaningful benefit for the right practice.
HIPAA and the vendor relationship
Cloud PM software vendors sign Business Associate Agreements and are responsible for the security of the data they host. This shifts some HIPAA liability, but not all of it. You are still responsible for workstation security, user access controls, employee training, and incident response. The Security Rule's requirements apply to your organization's behavior regardless of where the data physically lives.
Review the cloud vendor's BAA carefully before signing. Specifically: what are their data breach notification timelines? What is their data retention and deletion policy when you cancel service? Can you export a complete patient record in a portable format? These questions matter — and the answers vary significantly between vendors.
Which Is Right for Your Practice?
Use these questions to pressure-test each option for your specific situation:
- You have 2+ locations and want unified patient records
- Your internet is fiber-redundant with a cellular failover
- You are starting a new practice and want minimal upfront hardware
- Your current server is 5+ years old and due for replacement
- Remote access for a billing team or multiple providers is a daily need
- Your internet connection has reliability issues or limited failover options
- Your current server is less than 3 years old and well-maintained
- You use custom reporting or database-level integrations
- You are in a single location with no multi-site access requirements
- Your CBCT imaging volume is high and cloud round-trips add latency
The honest answer for most established single-location practices is: your current on-prem setup is probably fine, and migration to cloud should be a deliberate decision with a clear benefit — not a reaction to vendor marketing. The honest answer for 3+ location DSOs is: cloud PM's multi-location access is a genuine operational advantage that is hard to replicate with on-prem VPN architecture.
When your current server hardware is approaching end of life, that is the natural evaluation point. You are spending money on hardware either way — the question is whether to spend it on a new server or invest in a cloud migration. Both are reasonable choices. Neither one is obviously wrong.