Fitting any solid wood material into a house , whether its room dooors, solid kitchen, or furniture , needs to be done with care.
Regardless of how long a house is built , thats not the real issue here. The one thing that will do irrepairable damage to solid wood is suddenly changing its environment from mayeb, an unheated workshop to , a full blown centrally heated house , with a high heat level in a kitchen.
Best practice is to bring up the heat level at a slowly increasing rate over a period of days, maybe a week or two if possible, especially if your kitchen has large solid panels in the doors. Solid wood in a functioning kitchen will achieve a moisture content of between 6-10%.
You would be lucky to have new kitchen doors delivered to you that are below 10% depending on the storage methods used prior to delivery.
They take time to settle down to a new environment heat wise. So be careful.
sabre