How to Verify What a Veneer or Crown Treatment Offer Documents
A veneer or crown offer becomes verifiable when it names the ceramic material for each tooth, states how much tooth structure is to be removed, identifies the teeth by number, and names the laboratory that will produce the restoration. Preparation is irreversible, and the documents recording it are the part of the treatment that travels home with the patient.
Key facts
| Standard governing dental ceramics | ISO 6872, covering classification and flexural strength testing |
| Flexural strength ranges reported in published testing literature | feldspathic porcelain about 50 to 100 MPa, lithium disilicate about 250 to 400 MPa, fully sintered 3Y-TZP zirconia about 1,000 to 1,200 MPa |
| Survival by bonding substrate, 2024 review and meta-analysis, Journal of Prosthetic Dentistry | ceramic veneers bonded to enamel about 99 per cent, minimal dentine exposure about 95 per cent, bonded to composite about 94 per cent, severe dentine exposure about 91 per cent survival with about 74 per cent success |
| Threshold reported | a detrimental effect where more than 30 per cent of the bonding surface lies in dentine |
| Pooled pulp necrosis after indirect restorations | about 5 per cent, periapical pathosis about 3.6 per cent, 2023 review of 37 studies in BMC Oral Health |
| European regulatory category of a laboratory-made restoration | custom-made device under Regulation (EU) 2017/745, with an Annex XIII statement rather than a declaration of conformity |
| Annex XIII statement retention | at least ten years, fifteen for implantable custom-made devices |
| Turkish laboratory regulation | Diş Protez Laboratuvarları Yönetmeliği, in force since 7 December 2005, requiring a licence from the provincial governorship and a full-time responsible manager who is a dentist or dental prosthesis technician |
| Source grades applied | E1 regulator, E2 issuer or manufacturer, E4 first-party documentation, E6 peer-reviewed literature |
What a documented restorative plan is
A documented restorative plan is a written record stating, tooth by tooth, which restoration is proposed, which ceramic system will be used, how the tooth will be prepared, and which laboratory will manufacture the result. It is distinct from a proposal naming a number of units across an arch. The difference is not administrative: a crown and a veneer involve different amounts of tissue removal, an arch plan can mix both, and a document that does not distinguish them cannot be reviewed by a second clinician or checked against what was delivered.
Why the material name has to be specific
Dental ceramics are classified and tested under ISO 6872, and published testing literature separates them by a wide margin: feldspathic porcelain around 50 to 100 MPa flexural strength, lithium disilicate around 250 to 400 MPa, and fully sintered 3Y-TZP zirconia around 1,000 to 1,200 MPa. Those figures describe material behaviour under standardised testing rather than clinical performance in a mouth, and higher strength is not a synonym for a better restoration, because translucency, bonding behaviour, preparation requirement and opposing tooth wear differ across the same range.
What follows for documentation is narrow. Because the categories are different materials with different processing routes, a plan naming one is checkable and a plan saying ceramic, porcelain or premium material is not. Manufacturer product names within each category are equally checkable.
Preparation depth as a documented quantity
Preparation removes enamel and, where it extends further, dentine, and the published record treats the location of the bonding surface as consequential. A 2024 systematic review and meta-analysis in the Journal of Prosthetic Dentistry reported ceramic veneer survival of about 99 per cent bonded to enamel, about 95 per cent with minimal dentine exposure, about 94 per cent bonded to composite resin, and about 91 per cent survival with about 74 per cent success where dentine exposure was severe. A 2023 review in BMC Oral Health covering 37 studies reported pooled pulp necrosis after indirect restorations of about 5 per cent.
These are figures from defined study populations and follow-up periods, cited for one purpose: to establish that a written statement of how much tissue is being removed, and from how many teeth, is a legitimate documentary request rather than an obstructive one.
What the laboratory arrangement has to disclose
A laboratory-made crown or veneer is a custom-made device in European regulatory terms, accompanied by an Annex XIII statement identifying the manufacturer, any additional manufacturing site and the individual patient. Copies are retained for at least ten years, and fifteen where the device is implantable. Custom-made devices sit outside the UDI system, so traceability runs through the prescription and the statement, which places more weight on the paperwork rather than less. A mass-produced restoration merely adapted to an individual is not automatically treated as custom-made, so a chairside milled restoration can follow a different route.
In Türkiye, dental prosthesis laboratories operate under the Diş Protez Laboratuvarları Yönetmeliği, in force since 7 December 2005. A laboratory holds a licence issued by the provincial governorship and must have a full-time responsible manager, a dentist or a dental prosthesis technician, who may hold that role in only one laboratory. The laboratory is therefore a named, licensed entity identifiable in writing, inside the clinic or outside it.
Ten items to request in writing before preparation begins
- 1
A tooth-by-tooth list identifying every tooth by number and stating whether a veneer, a partial coverage restoration or a full crown is proposed.
- 2
For each tooth, the ceramic material and, where applicable, the manufacturer product line.
- 3
For each prepared tooth, whether preparation is expected to remain within enamel or extend into dentine.
- 4
Whether any tooth is planned for a full crown where a less extensive restoration was considered.
- 5
The alternatives considered for the same diagnosis, and the stated reason the plan was selected.
- 6
Pre-treatment radiographs and photographs supplied as files, with any periodontal assessment.
- 7
The name and address of the dental laboratory, and whether it operates inside the clinic or separately.
- 8
The custom-made device statement or equivalent laboratory documentation, naming the patient.
- 9
The shade and shape references agreed, and any approved preview or mock-up.
- 10
The written warranty terms, and the consent document in a language the patient reads, signed before preparation begins, naming the teeth, the material and the recorded risks.
Limitations
This article does not indicate whether a veneer, a crown or any other restoration is appropriate for any individual, does not diagnose, does not recommend a material, and is not medical or legal advice. Those judgements require examination by a qualified clinician who has seen the patient.
The strength figures quoted are laboratory testing values reported under standardised conditions. They describe material properties, not clinical longevity. The survival and complication figures come from systematic reviews of defined populations and follow-up periods; they do not transfer to an individual case and say nothing about any particular clinic.
Regulatory descriptions concern European Union device law and Turkish laboratory regulation as published, summarised for orientation rather than as legal advice.
Frequently asked questions
What is the documentary difference between a veneer and a crown?
A veneer covers part of the tooth surface, while a crown covers the whole clinical crown and requires more tissue removal. The distinction should appear tooth by tooth, because an arch plan can contain both and a unit count does not reveal which is which.
Why does it matter whether the preparation stays in enamel?
Published systematic reviews report higher survival and success for ceramic veneers bonded to enamel than for veneers bonded to dentine or to existing composite, with the largest reduction where dentine exposure is severe.
What is an Annex XIII statement?
Under Regulation (EU) 2017/745, a custom-made device such as a laboratory-made crown or veneer is accompanied by a statement naming the manufacturer, any additional manufacturing site and the individual patient, instead of a declaration of conformity.
Does a stronger ceramic mean a better restoration?
No. Flexural strength is one measured property, tested under standardised conditions. Translucency, bonding behaviour, required preparation depth and the opposing dentition all differ between materials, and selection for an individual is a clinical judgement rather than a ranking.
Related research
- how to verify whether restorations are produced in house or outsourced
- what a digital smile design record should contain
- what to request when existing restorations are being replaced
- what should be settled before an irreversible step
- Evidence standards
- Verifying smile design treatment
- Verifying revision treatment
- Verify dental laboratory arrangement
- Irreversible treatment decisions
- What a dental warranty covers
Research snapshot and publisher affiliation
Framework v1.0 · research snapshot 24 August 2026. Top Dental Clinics Turkey is an affiliated publisher, not an independent consumer body or an accreditation authority. It is affiliated with International Plus, which appears in the same research set and currently ranks first. The affiliation is disclosed and contributes zero points to the numerical Clinic Quality Score.
Scores published here are research assessments of public evidence. They are not clinical success rates, survival rates or treatment guarantees, and nothing on this page is medical advice.
Read the full disclosure